CN115104474A - Method for improving quality of grapefruit fruits - Google Patents
Method for improving quality of grapefruit fruits Download PDFInfo
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- CN115104474A CN115104474A CN202210695246.XA CN202210695246A CN115104474A CN 115104474 A CN115104474 A CN 115104474A CN 202210695246 A CN202210695246 A CN 202210695246A CN 115104474 A CN115104474 A CN 115104474A
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
- A01G7/04—Electric or magnetic or acoustic treatment of plants for promoting growth
- A01G7/045—Electric or magnetic or acoustic treatment of plants for promoting growth with electric lighting
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
- A01G7/06—Treatment of growing trees or plants, e.g. for preventing decay of wood, for tingeing flowers or wood, for prolonging the life of plants
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- Environmental Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
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- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
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Abstract
The application discloses a method for improving the quality of grapefruit fruits, relates to the technical field of plant cultivation, and solves the problem of fruit quality reduction caused by extreme climates such as typhoon and the like, and comprises the following steps: firstly, paving a layer of ground cloth on a tree planting land, wherein the ground cloth is formed by weaving a plurality of vertically and horizontally arranged plastic fibers; secondly, additionally laying a layer of reflective film on the ground cloth; (III) the bracing piece is installed at the interval on the planting ground, and the height of bracing piece can be adjusted according to the height of the tree body, is provided with the light filling lamp between the adjacent bracing piece, and the light filling lamp is provided with a plurality ofly, is connected with the electric wire between the adjacent light filling lamp. The illumination intensity of the light supplement lamp is set to be 1200 mu mol m ‑2 ·s ‑1 And 5 hours of light supplement at 7-12 points at night. The ground cloth can be laid when the fruit trees begin to be planted, and the reflective film begins to be covered with the film in the middle of fruit expansion. Book (I)The application can effectually improve the fruit quality of shaddock.
Description
Technical Field
The application relates to the technical field of plant cultivation, in particular to a method for improving the quality of grapefruit fruits.
Background
Red-fleshed honey pomelos, also known as red-heart honey pomelos, belong to the genus Citrus arbors of the family Rutaceae, are native to benign variant single plants in Hei xi pomelo gardens of Fujian province and county, are red-heart honey pomelos due to red fruit flesh juice, and are identified as new varieties of honey pomelos in 2006. The pulp and the juice are bright red in color and contain rich nutrient substances such as vitamin C, lycopene, carotene and the like, so that the pulp and the juice are deeply loved by people.
The patent publication No. CN105594539B discloses a cultivation method for increasing yield and quality of crystal honey pomelo, which comprises the technical measures of layout of crystal honey pomelo and MiYou xi honey pomelo, fertilization management of young and adult pomelo trees in a pomelo garden, water management, pest control and the like. The fruit yield of the pomelos of the crystal pomelo trees in the full-production period reaches 100-130 per plant, and the yield is increased by 30-60 per plant compared with the traditional cultivation method.
When the method is applied to cultivation of red-pulp honey pomelos, traditional clear-tillage cultivation management is adopted, and chemical fertilizer and chemical control are applied repeatedly, so that soil land capability is declined, the trees are not aged before aging, and the yield and the quality of the honey pomelos are sharply reduced. In addition, most of the red-heart honey pomelos begin to mature and come into the market in 9 months, the honey pomelo fruits are in the main period of sugar acid accumulation and metabolism in 8-9 months, and in the planting places in subtropical monsoon climate, the quality of the fruits is often reduced due to the influence of extreme climate such as typhoon, the condition that the mature period of the fruits is delayed is also happened, and the economic benefit of fruit growers is seriously influenced.
Disclosure of Invention
In order to reduce the influence of overcast and rainy weather on the accumulation of organic matters in fruits and improve the quality of the fruits, the application provides a method for improving the quality of grapefruit fruits.
The application provides a method for improving the quality of pomelo fruits, which adopts the following technical scheme:
firstly, paving a layer of ground fabric on a tree planting land, wherein the ground fabric is formed by weaving a plurality of vertically and horizontally arranged plastic fibers;
secondly, additionally laying a layer of reflective film on the ground cloth;
and thirdly, supporting rods are installed on the planting ground at intervals, the height of each supporting rod can be adjusted according to the height of the tree body, a plurality of light supplement lamps are arranged between every two adjacent supporting rods, and electric wires are connected between every two adjacent light supplement lamps.
By adopting the technical scheme, the weeds around the tree body can be covered by the ground cloth, so that the growth vigor of the weeds is effectively reduced, and more nutrients in the soil are supplied to the tree body; because the fruits of the grapefruits are heavier, most of the fruits fall below the blades and are shielded by the blades, and the reflective film is laid on the ground cloth, so that the reflective film can reflect light to the back of the blades, and meanwhile, the light can be reflected to the surfaces of the fruits, and the photosynthetic efficiency is improved; set up the light filling lamp at the top of the tree body, when meeting with overcast and rainy weather, can increase the illumination intensity of planting the ground on daytime, can increase the light filling at morning and evening simultaneously, it is long when increasing illumination for sunlight illumination length can satisfy the growth needs of long sunshine plant, uses through the cooperation of light filling lamp with the reflective membrane, realizes effectively utilizing the light energy.
Preferably, the illumination intensity of the light supplement lamp is set to be 1200 [ mu ] mol.m -2 ·s -1 And 5 hours of light supplement at 7-12 points at night.
By adopting the technical scheme, the illumination intensity of the light supplement lamp is set at 1200 mu mol.m -2 ·s -1 In the range, the illumination intensity of the light supplement lamp meets the requirement of tree growth.
Preferably, the ground fabric can be laid when the fruit trees begin to plant, and the reflective film begins to be covered in the middle of fruit expansion.
Through adopting above-mentioned technical scheme, through the setting on ground cloth, can cover as early as possible weeds around the tree body, effectively reduce ruderal growth vigor for the tree body is given in the more supply of nutrition of soil, and the tectorial membrane is carried out in the fruit expanding period, and the reflection efficiency of reflective membrane is higher this moment, can realize the utilization of reflective membrane maximum efficiency.
Preferably, the electric wire is provided with a connecting seat, the connecting seat is circumferentially provided with an annular blocking edge protruding outwards, and the cross section of the annular blocking edge is hexagonal.
Through adopting above-mentioned technical scheme, keep off the setting on edge through the annular, can effectively reduce the rainwater and pass through the inside possibility of connecting seat entering light filling lamp, simultaneously, keep off along setting into the hexagon through keeping off the annular, be convenient for realize the gripping operation of people's hand.
Preferably, the light supplementing lamp comprises a base and a lampshade, and a water guide plate which is obliquely and downwards arranged from a position close to the connecting seat to a position far away from the connecting seat is arranged at one end, close to the connecting seat, of the base.
Through adopting above-mentioned technical scheme, through the setting of water guide plate for overcast and rainy weather rainwater is along the quick light filling lamp that leaves of water guide plate, thereby effectively reduces the possibility of light filling lamp ponding.
Preferably, the support rod comprises an insertion rod inserted in the planting field, the support rod further comprises a sleeve rod sleeved outside the insertion rod, a plurality of insertion holes formed in the insertion rod along the length direction of the insertion rod are formed in the insertion rod, the insertion holes penetrate through two sides of the insertion rod, through holes are formed in the sleeve rod along the length direction of the sleeve rod, and a bolt connected with the through holes and the insertion holes is inserted between the support rod and the sleeve rod.
Through adopting above-mentioned technical scheme, through the setting of inserted bar and loop bar for the holistic height of bracing piece can highly carry out corresponding regulation according to the growth of plant, thereby makes the interval between light filling lamp and the tree body reach the optimal effect, thereby can effectively improve the availability factor of light filling lamp.
Preferably, the through-hole is a kidney-shaped hole.
Through adopting above-mentioned technical scheme, set up the perforation into waist type hole, be convenient for realize on the loop bar perforation and the inserted bar on the jack between quick matching, improve the convenience of operation.
Preferably, the connecting seat is provided with a connecting end, the connecting end is provided with a connecting hole, the connecting hole is adjacent to the supporting rod, an iron wire is detachably connected between the connecting end and the iron wire, and a winding wire is arranged between the connecting end and the iron wire.
Through adopting above-mentioned technical scheme, through the setting of iron wire, can further increase the connection stability between electric wire and the bracing piece.
Preferably, the connecting seat and the electric wire are integrally cast.
Through adopting above-mentioned technical scheme, connecting seat and electric wire are integrative to be pour, can improve the sealed degree between electric wire and the connecting seat, further reduce the possibility of rainwater infiltration connecting seat.
Preferably, the top end of the supporting rod is provided with a bearing seat for bearing electric wires and iron wires.
Through adopting above-mentioned technical scheme, through the setting that bears the weight of the seat, improve the steadiness of being connected between iron wire, electric wire and the bracing piece.
Has the beneficial effects that:
1. through the arrangement of the ground fabric, weeds around the tree body can be covered, the growth vigor of the weeds is effectively reduced, and more nutrients in the soil are supplied to the tree body;
2. because the fruits of the grapefruits are heavier, most of the fruits fall below the blades and are shielded by the blades, and the reflective film is laid on the ground cloth, so that the reflective film can reflect light to the back of the blades, and meanwhile, the light can be reflected to the surfaces of the fruits, and the photosynthetic efficiency is improved;
3. set up the light filling lamp at the top of the tree body, when meeting with overcast and rainy weather, can increase the illumination intensity of planting the ground on daytime, can increase the light filling at morning and evening simultaneously, long when increasing illumination, use through the cooperation of light filling lamp with the reflective membrane, realize the effective utilization to the light energy.
Drawings
FIG. 1 is a schematic structural diagram of the overall structure of the present embodiment;
FIG. 2 is a schematic structural diagram of a fill-in light of the present embodiment;
FIG. 3 is an exploded view of the support rod of the present embodiment;
FIG. 4 is a graph of daily variation of environmental factors;
FIG. 5 is the effect of reflective films on photosynthetic parameters;
FIG. 6 is the effect of a light-reflecting film on chlorophyll fluorescence characteristics of leaves;
FIG. 7 is the effect of tree disks with reflective film on the individual fruit weight;
FIG. 8 is the effect of the application of a reflective film on the thickness of the peel;
FIG. 9 is the effect of the reflective film laid on the tree disk on the transverse and longitudinal diameter of the fruit;
FIG. 10 shows the effect of the reflective film on the soluble solids of the fruit;
FIG. 11 shows the effect of the reflective film on the transverse and longitudinal diameter of the pulp;
FIG. 12 shows the effect of the reflective film on the area of the pulp and the cross-sectional area of the fruit;
FIG. 13 shows the effect of the application of the light-reflecting film on the outer perimeter of the fruit.
The reference numbers: 1. ground cloth; 2. a light-reflecting film; 3. a support bar; 31. inserting a rod; 311. a jack; 32. a loop bar; 321. perforating; 4. iron wires; 5. a light supplement lamp; 51. a base; 52. a water guide plate; 53. a lamp shade; 6. an electric wire; 7. a connecting seat; 71. an annular blocking edge; 72. a connecting end; 73. connecting holes; 8. winding the filaments; 9. a bolt; 10. a bearing seat.
Detailed Description
The present application is described in further detail below with reference to figures 1-13.
Referring to fig. 1, taking a pomelo tree body as an example, a layer of ground fabric 1 is laid above a planting field of the tree body, and the ground fabric 1 can be laid when the planting is started. Ground cloth is woven by many plastic fiber of arranging with great ease and is formed, because the interval between the adjacent horizontal and vertical fibre is less for weeds around the tree are difficult to pass through from the gap between the horizontal and vertical fibre, but moisture can permeate through from the gap, has realized the effect of protecting water and weeding to the tree.
Referring to fig. 1, ground cloth 1's top covers afterwards has reflective membrane 2, and reflective membrane 2 is used for the reflection of light, begins to cover reflective membrane 2 in fruit inflation middle period, covers the reflective membrane this moment, and is comparatively clean on the reflective membrane, can make the reflection of light efficiency of reflective membrane the highest.
Referring to fig. 1, bracing piece 3 is installed at the interval on the planting ground, the top of bracing piece 3 is higher than the top of the tree body, be connected with iron wire 4 between adjacent bracing piece 3, simultaneously, be connected with light filling lamp 5 between adjacent bracing piece 3, through the dual function of light filling lamp 5 with reflective membrane 2, make the back of tree body blade can fully absorb light, and simultaneously, to the shaddock, the shaddock is whole heavier, after the fruit grows to certain size, can hang down to the ground of blade, setting through reflective membrane 2, can reflect light to the fruit body on, realize the regulation of light to the fruit body quality.
Referring to fig. 1 and 2, being connected with electric wire 6 between adjacent light filling lamp 5, connecting seat 7 is installed at the interval on the electric wire 6, and connecting seat 7 supplies the installation of light filling lamp 5, and the shaping is pour with 6 an organic whole of electric wire to connecting seat 7 to effectively reduce rainwater infiltration connecting seat 7's possibility. The outside protrusion in middle part position of connecting seat 7 is formed with the annular and keeps off along 71, and the annular keeps off along 71 the cross section for the hexagon, and on the one hand, the annular keeps off and can reduce between rainwater infiltration connecting seat 7 and the light filling lamp 5 along 71's setting, and on the other hand, the annular keeps off along 71 design and becomes the hexagon, makes things convenient for the gripping.
Referring to fig. 2, connecting seat 7 has been seted up connecting hole 73 to the one end integrated casting that is close to iron wire 4 of connecting seat 72, has been connected with winding wire 8 between connecting hole 73 and the iron wire 4, consequently, electric wire 6 is connected through winding wire 8 with iron wire 4, increases the joint strength who is connected between electric wire 6 and the iron wire 4.
Referring to fig. 2, light filling lamp 5 includes base 51 and lamp shade 52, and base 51 is close to the one end of connecting seat 7 and is provided with from the position that is close to connecting seat 7 to the decurrent water deflector 52 of the position slope of keeping away from connecting seat 7 for the water that drops on water deflector 52 can be quick from light filling lamp 5 landing, the inside possibility of very big reduction rainwater entering light filling lamp 5. The light supplementing lamp 5 is of a type with adjustable light quality, and the light quality optimal for the growth of the tree body is provided through the proportion of the red light quality, the green light quality and the blue light quality.
Referring to fig. 3, the support rod 3 includes an insertion rod 31 inserted in the planting field, the support rod 3 further includes a sleeve rod 32 sleeved outside the insertion rod 31, the insertion rod 31 is provided with a plurality of insertion holes 311 formed along the length direction of the insertion rod 31, the insertion holes 311 penetrate through two sides of the insertion rod 31, the sleeve rod 32 is also provided with a through hole 321 in the length direction, and a plug pin 9 penetrating through the through hole 321 and the insertion hole 311 is inserted between the insertion rod 31 and the sleeve rod 32. The through hole 321 is configured as a kidney-shaped hole, which facilitates the butt joint between the through hole 321 and the insertion hole 311, so that the installation of the plug 9 is quick.
Referring to fig. 1 and 3, the top of the loop bar 32 is provided with a bearing seat 10 for placing the power supply line 6 and the iron wire 4, so that the connection stability among the power supply line 6, the iron wire 4 and the loop bar 32 can be effectively improved.
In a second aspect, the present application analyzes the overall design into use:
1 materials and methods
1.1 test materials and Environment
The test is carried out in 7-9 months in 2021 on a demonstration base of a premature high-quality cultivation technology of 'Fuqing Dong Zhang honey pomelo', the base is located in Dong Zhang Daoqiancu (longitude 119 degrees, 19 degrees and latitude 25 degrees, 69 degrees) in Fuqing city, the average temperature in the field is about 20.1 ℃, the average precipitation in the field reaches 1535.5 mm, the soil in the test field is sandy soil, and the terrain is a hilly mountain land. The experiment selects the honey pomelos with the proprietary intellectual property of 'Fuqing Dongzhang honey pomelos' obtained in 6 years, the plant spacing and the row spacing are about 3.7 m multiplied by 3.0 m, the growth vigor of the fruit trees is basically consistent, and the growth and development state is good. The test adopts a mode of additionally laying a layer of reflective film on a layer of ground cloth to coat the film. The ground cloth can be laid when the fruit trees begin to plant, the reflective film begins to cover in the middle of fruit enlargement, and the reflective film covering time is 2021 year, 7 month and 20 days. In the central areas of fruit trees in the areas where the reflective films are laid and the comparison areas (without the reflective films), three plants with good growth vigor and luxuriant branches and leaves are respectively selected as index data acquisition objects, the third leaf of the branch producing fruit is selected as a test material, and clear weather is selected for data detection and recording in No. 8-20-9-1 months.
1.2 orchard environmental factor determination
Respectively installing a conventional thermometer and a conventional hygrometer at a position one meter away from the ground of two fruit trees to be measured, measuring the illumination intensity of the day by using a PG100N plant illumination monitor, and measuring the illumination intensity of the fruit trees at a position 6: measuring and recording the environmental factor parameters such as temperature, humidity, illumination intensity and the like once every 2 hours from 00 to 18:00, and continuously measuring for 3 days.
1.3 leaf photosynthesis parameter determination
The fluorescence parameter measurement was done before fruit ripening using a portable CIRAS-2 photosynthesizer. Measured parameter CO 2 D(CO 2 Drop height of (c), Pn (net photosynthetic rate), E (transpiration rate), Gs (stomatal conductance), Ci (intercellular space CO) 2 Concentration), etc.
1.3.1 leaf photosynthetic response Curve determination
Using a portable CIRAS-2 photosynthesizer, at 9 a.m.: light intensity gradient of 50, 100, 200, 300, 400, 600, 800, 1000, 1200, 1400, 1600, 1800 mu mol m within 00-11:00 -2 ·s -1 ，CO 2 Concentration set to atmospheric CO 2 Concentrations were determined in 3 replicates each time.
1.3.2 determination of basic photosynthetic parameters of leaves
Using a portable CIRAS-2 photosynthesizer, performed in parallel with the environmental factor measurements at 9 a.m.: measuring 4 functional leaves (the 3 rd leaf of a branch producing fruit) of each fruit tree in parallel within 00-11:00, and setting the measurement conditions: the illumination intensity is 1200 mu mol. m -2 ·s -1 ，CO 2 Concentration set to atmospheric CO 2 And (4) concentration.
1.4 leaf chlorophyll fluorescence characteristic parameter determination
The method comprises the steps of performing a measurement by using a Handy-PEA chlorophyll fluorescence efficiency instrument, performing a parallel test on each fruit tree by taking 4 functional leaves (the third leaf of a fruit tree branch), measuring data every 2 hours, performing dark treatment on a test leaf sample by using leaves for more than 20 min, and measuring by using a fluorescence instrument to record F0 (fluorescence origin), Fm (fluorescence maximum), Fv (variable fluorescence), Fv/Fm (maximum chemical efficiency), Vj (relative variable fluorescence), DI0/RC (reaction center heat dissipation energy), psi (Eo) (electron transfer rate), PI abs (photochemical performance index) and the like. Setting the measurement conditions: the illumination intensity is 1200 mu mol. m -2 ·s -1 ，CO 2 Concentration set to atmospheric CO 2 And (4) concentration.
1.5 leaf Nitrogen content measurement
The measurement is carried out by using a Czech PSIN-Pen N110 portable leaf nitrogen measuring instrument, the normalized greenness index (NDGI) calculated according to the reflection spectrum and the environmental factor measurement are carried out in parallel, the same date is within 9:00 to 11:00 in the morning, 4 functional leaves (the third leaf of a branch producing fruit) are taken from each fruit tree for parallel test, the data is measured every 2 hours, and the nitrogen content percentage is recorded.
1.6 fruit quality index measurement
The illumination intensity of the light supplement lamp is set to 1200 mu mol m -2 ·s -1 The fruit sampling and related data measurement are carried out every 8 days after the reflective film is laid on the tree disc, the fruit sampling is carried out on 21 days in 8 months, 29 days in 8 months, 8 days in 9 months, 17 days in 9 months and 1 day in 10 months after the weather influence is eliminated, and the sampling time is 11 in the morning: 00. the sizes of the randomly selected experimental group and the control group are similar, 6 fruits without mechanical damage are respectively selected, and at least 1 fruit is guaranteed in east, south, west and north directions of a sample. And (5) carrying back the sample to an experimental laboratory after the sample is collected to measure the relevant indexes. The measured indicators include: single fruit weight, peel thickness, fruit transverse and longitudinal diameter, pulp transverse diameter, pulp longitudinal diameter, pulp area, outer perimeter, soluble solid content, fruit shape index, symmetry index, pulp aspect ratio, pulp color.
1.6.1 measurement of relevant indexes of fruit quality of honey pomelo
(1) Determination of fruit weight per fruit
And weighing by using an electronic balance. And respectively weighing the single fruit weight of the 6 samples of the light supplement group and the control group, and respectively averaging the 6 samples of the two groups.
(2) Measurement of fruit pericarp thickness and transverse and longitudinal diameter
Measured using a vernier caliper. The sample is longitudinally cut in half, the peel thickness is measured at three different positions of the sample, and the average value is taken. The maximum transverse longitudinal diameter of each sample was measured and the average was taken for each set of 6 samples.
(3) Measuring transverse and longitudinal diameters of pulp, area of pulp, outer perimeter, fruit shape index, transverse and longitudinal ratios of pulp and pulp color: after the sample is longitudinally cut into half parts, one half part is used for measurement, and the other half part is used for carrying out section scanning and analysis on the sample by using a melon and fruit section analysis system of an LA-S series plant image analyzer from Hangzhou Wanshen detection technology Co. Firstly, clean water is put into an imaging disc to cover the bottom of the imaging disc and remove bubbles, and then a sample cutting surface is reversely buckled in the imaging disc to enable a scanner to be opened at the back and scan and image in a dark environment. After imaging, a part of the surface pulp is replaced, and after removing the miscellaneous points, analysis is carried out to obtain a series of data such as transverse and longitudinal diameter of the pulp, area of the pulp, outer perimeter, fruit shape index, transverse and longitudinal ratio of the pulp, pulp color and the like.
(4) Measurement of soluble solids in pulp
Measured using a handheld digital refractometer. The method comprises the following specific steps: after the detection lens is cleaned by distilled water, the detection lens is wiped dry by a lens wiping paper. And then, using distilled water to adjust zero, dropping the squeezed juice on a refractor to measure, pressing a determination key, and reading a numerical value on a digital display to obtain the content of the soluble solid matter. And finally, cleaning by using distilled water, and carrying out zero setting again for next use. The measurement was repeated 3 times for each sample and averaged.
1.6.2 measurement of related indexes of fruit yield of honey pomelo
And respectively selecting 5 fruit trees with approximately same tree vigor, and measuring the height, the trunk circumference, the row spacing and the crown of the tree. The weight of each fruit was determined by randomly picking 30 fruits. And counting the total amount of the fruits of the selected single fruit tree. Calculating to obtain the yield per plant and the yield per mu.
1.7 data statistics and analysis
Experimental data the data were processed using Excel2010 and statistics were generated using GraphPad Prism 8 mapping software.
2 test design and result analysis
2.1 Effect of reflective film laying on orchard environmental factors
Table 1 shows that the monitoring data of 3 days in the orchard is that, when the light supplement lamp is not added, the average temperature and the average humidity of the film-coated area are higher and lower than those of the non-film-coated area, and the maximum temperature of the film-coated area can reach 43.6 ℃.
Referring to fig. 4, when the fill-in light is not added, it can be seen that in one day, the orchard environment reaches the maximum temperature and the minimum humidity from 12 th to 14 th, and at this time, the difference between the environment of the area where the reflective film is laid and the area where the reflective film is not laid is the most significant, but the difference between the two curves of the illumination intensity is not significant. The reflection film can increase the environmental temperature and reduce the environmental humidity, but has little influence on the direct solar illumination intensity.
TABLE 1 environmental factor parameter Table
| Treatment of | Average temperature in days (. degree. C.) | Maximum temperature (. degree. C.) | Minimum temperature (. degree.C.) | Average daily humidity (%) | Maximum humidity (%) | Minimum humidity (%) | Light intensity on average day (Lux) | Maximum light intensity (Lux) | Minimum light intensity (Lux) |
| CK-d1 | 33.0 | 37.6 | 26.9 | 71.0 | 90.5 | 56.6 | 6008.0 | 10765.3 | 421.8 |
| CK-d2 | 35.1 | 41.7 | 26.7 | 64.3 | 90.4 | 42.4 | 5740.0 | 10639.1 | 382.4 |
| CK-d3 | 33.6 | 39.5 | 27.2 | 67.1 | 90.8 | 46.7 | 6054.2 | 11711.3 | 342.9 |
| Reflective film-d 1 | 35.2 | 43.6 | 26.9 | 65.4 | 91.0 | 47.1 | 6219.9 | 11044.9 | 564.1 |
| Reflective film- | 35.4 | 42.4 | 27.2 | 63.4 | 89.9 | 43.2 | 6427.1 | 11391.8 | 287.8 |
| Reflective film- | 35.4 | 42.4 | 27.2 | 66.3 | 90.5 | 47.2 | 6311.7 | 10872.4 | 650.4 |
2.2 Effect of reflective films on photosynthetic parameters
2.2.1 Effect of reflective films on vane photoresponse parameters
Referring to FIG. 5, 50-1800 μmol. m is compared -2 ·s -1 Corresponding indexes under different illumination intensities, fig. 5a is a light response curve taking E (transpiration rate) as a vertical coordinate, wherein E is an index reflecting the transpiration capability of the fruit tree, and the higher the E value is, the faster the transpiration speed is. The change range of the transpiration rate curves of the two areas is small, and the whole transpiration rate curve shows a slow rising trend. The illumination intensity is 1800 mu mol m -2 ·s -1 The time reaches the maximum value, and compared with CK leaves, the transpiration rate of the leaves in the reflective film laying area is obviously higher. The reflective film is laid to improve the transpiration of the tree body.
FIG. 5b is a graph of photoresponse curve with Pn (net photosynthetic rate) as ordinate, the Pn response is a parameter representing the photosynthetic capacity, which is the capacity of photosynthetic accumulation of organic matter minus the capacity of respiration for consumption of organic matter, the greater the Pn value, the greater the photosynthetic capacity and the higher the organic matter accumulation capacity. Pn is driven by linear increase along with the increase of illumination intensity, and the slope of the light response curve of the Pn leaves paved with the reflective film is larger than that of the leaves not paved with the reflective film, which indicates that the net photosynthetic speed is increased and the photosynthetic rate is increased by paving the reflective film.
FIG. 5c is CO 2 D(CO 2 Drop of) is the light response curve of the ordinate, CO 2 D value is in response to the intercellular CO 2 Concentration and external CO 2 The difference between the concentrations can be expressed as CO 2 In the case of gas exchange, when CO 2 D is positive, indicating intercellular CO 2 The concentration is higher than the outside, and the negative value is opposite. As shown in FIG. 5c, when the illumination intensity is increased, CO 2 The drop of (A) is in a continuously decreasing trend, indicating that CO is present 2 The intercellular diffusion is inhibited, and the external CO is released 2 The concentration is higher than that of the intracellular CO 2 And (4) content. Laying reflecting film area CO 2 D is smaller, indicating that CO increases with photosynthesis 2 Diffusion is rather inhibited, being limited to CO 2 And (4) driving force of diffusion to the outside.
As shown in fig. 5d, which is a light response curve with Gs (stomatal conductance) as the ordinate, Gs is the parameter that reflects the size of the leaf pores and the exchange capacity of the moisture gas from the plant body to the outside, and the higher the stomatal conductance, the higher the exchange capacity of the leaf with the external environment material through the pores is. As shown in fig. 5d, the air hole conductivity gradually increases with the change of the illumination intensity, and the air hole conductivity curve change of the reflective film-paved area is higher than that of the reflective film-unpaved area, and in general, paving the reflective film can improve the air hole conductivity. In connection with the transpiration rate curve of fig. 5a, when the porosity conductance is increased, the transpiration effect is also increased, which shows that the transpiration effect of the blade is increased by laying the reflective film in a manner of increasing the porosity conductance.
FIG. 5e shows the number Ci (intercellular space CO) 2 Concentration) is plotted on the ordinate against the light response curve, which reflects the intercellular space CO 2 Concentration, also as a parameter of respiratory capacityAnd (4) examining the data. As can be seen from FIG. 5e, as the intensity of light is increased, the intercellular spaces CO 2 The concentration is gradually reduced and is 800 mu mol m -2 ·s -1 Then the cell gap CO of the leaf tends to be stable, but the reflective membrane is laid 2 The concentration of the fruit tree leaves is still higher than that of the fruit tree leaves without the reflective film, which shows that the breathing efficiency of the fruit tree is also increased by the reflective film.
2.2.2 Effect of leaf Primary photosynthesis parameter determination
Table 2 shows that the illumination intensity is 1200 [ mu ] mol.m -2 ·s -1 As can be seen from the table, the measured basic photosynthesis parameters showed significant increases in E (transpiration rate), Gs (gas pore conductance), Pn (net photosynthetic rate), and Ci (inter-fine carbon dioxide content) after the reflection film had been applied, and CO (carbon dioxide content) compared with the parameters without the reflection film applied 2 D（CO 2 Fall of) is lower than that of the fruit tree leaves without the reflective film, E is improved by nearly one time, and Gs and Ci are nearly three times of the parameters of the reflective film laying. It is stated that the application of the reflective film improves the photosynthesis and also improves the conductance of the air holes, so that the transpiration rate and the respiration rate are increased, but the Pn (net photosynthetic rate) and CO (carbon monoxide) are increased 2 D（CO 2 Fall) the efficiency of photosynthesis is still greater than the efficiency of respiration and the rate of accumulation of organic matter in the plant is greater than the rate of consumption of organic matter
TABLE 2 light intensity setting of 1200 μmol. m-2. s-1 photosynthesis parameter
| Treatment of | CO 2 D | E | Gs | Pn | Ci |
| Reflective film | -24.35±2.05 | 3.02±0.02 | 130.00±8.00 | 18.60±1.70 | 117.00±3.00 |
| CK | -15.00±2.20 | 1.60±0.09 | 57.67±8.18 | 11.57±1.72 | 34.33±8.26 |
2.3 Effect of reflective Membrane on chlorophyll fluorescence Properties of leaves
2.3.1 daily Change in initial fluorescence F0
As shown in FIG. 6a, which is a daily variation graph of initial fluorescence F0, generally speaking, the level of F0 is in inverse proportion to the utilization rate of chemically utilized energy, and the fluctuation of F0 can be caused by the increase of heat consumption of the PS II system or the reversible inactivation of the heat consumption, so that the change of the plant photoprotection mechanism and the PS II reaction center can be presumed. As can be seen from FIG. 6a, F0 of the fruit tree without the reflective film gradually increases with the passage of time, reaches the peak at the top before and after 14:00, and the SP II has the lowest utilization rate of energy, which is because the photosynthesis of the fruit tree is inhibited due to too high illumination intensity. The fruit trees paved with the reflective films increase with time at the beginning, the highest point of F0 is reached at 10:00, the photosynthesis of the fruit trees is inhibited, but the ratio of the reflective films to the fruit trees is 12: the F0 sharply decreases at 00, and returns to normal at 14:00 and gradually decreases. At 10:00 it can be seen that the two sets of data exhibit significant differences.
2.3.2 daily Change in maximum fluorescence FM
FIG. 6b shows the maximum fluorescence yield Fm as a daily variation of the maximum fluorescence FM, which is the fluorescence yield when the reaction center of the photosystem PS II is completely closed, and reflects the electron transport of PS II. As can be seen from FIG. 6b, Fm approximately shows a trend of descending first and then ascending, Fm in both regions starts to gradually descend around 8:00, reaches a minimum value at 12:00 and then starts to slowly ascend, so that when the illumination intensity is increased, the light inhibition condition is relatively serious, the two samples have no obvious difference, and the inhibition appears at 12: 00.
2.3.3 daily Change of maximum photosynthetic efficiency Fv/Fm
Referring to fig. 6c and 6d, fig. 6d is a graph showing the daily variation of maximum photosynthetic efficiency Fv/Fm. Fv/Fm is the maximum photosynthetic efficiency of PS II, namely the maximum chemical quantum yield, reflects the maximum potential photosynthetic capacity of the plant, and the numerical reduction is recognized as an important expression of photoinhibition of the plant, wherein the higher the value is, the lower the photoinhibition degree is, and the highest the value is, the higher the photoinhibition degree is. As can be seen from fig. 6d, the two trees reach the lowest point at 12:00, but the maximum photosynthetic efficiency of the area where the reflective film is laid is slightly higher than that of the area where the reflective film is not laid, which indicates that the light inhibition situation is slightly slowed down by laying the reflective film, and that within 6:00-8:00, a small-range improvement of Fv/Fm occurs in the area where the reflective film is laid, while the area where the reflective film is not laid continuously decreases, which indicates that the light inhibition effect of the light reflection film is achieved when the light intensity is not high.
2.3.4 daily variation of Electron transfer Rate psi (Eo)
FIG. 6e is a graph of the daily change in electron transfer rate psi (Eo). psi (eo) is the efficiency of electron transport per reaction center, with variations that are highest in the 8:00-10:00 time range, whereas in the photoinhibition case, 12: the lowest values were achieved at 00 to 14:00, so the efficiency of the retro-reflective film laying was still slightly higher than the control during the electron transport lifetime.
2.3.5 daily Change with respect to variable fluorescence Vj
FIG. 6f is a graph of the daily variation of the relative variable fluorescence Vj, which reflects the degree of closing of the active reaction center at 2 ms of light. The general trend of Vj is that Vj rises first and then falls in a wave shape, and peaks at 12:00-14: 00. The increase is nearly doubled compared to 10: 00.
2.3.6 center Heat dissipation energy DI0/RC daily variation
FIG. 6g is a graph of reaction center heat dissipation energy DI0/RC daily variation. DI0/RC reflects the change of heat dissipation performance of laying and SP II reaction center, and the numerical value is increased, and the energy consumption is increased. As can be seen from FIG. 6g, the DI0/RC peaks at 12-14 deg.C, and the energy consumption is reduced when the light suppression of the reflective film is reduced at 8:00 deg.C. It is shown that whether photoinhibition or not is closely related to the increase of heat dissipation, which is a self-protection mechanism of plants.
2.3.7 daily Change in photochemical Performance index PI abs
FIG. 6h is a graph of the daily variation of the photochemical performance index PI abs, which is a parameter reflecting the light integration of plant leaves, and can also be used to determine whether the photosynthetic activity is impaired in one index. As can be seen from fig. 6h, the curve arc can be compared with fig. 6d, the daily variation trend of PI abs is the same as that of Fv/Fm, but no obvious difference is generated between the two controls on the light inhibition, and the two controls can be gradually restored, which indicates that for the light inhibition damage, the light reflection film is not greatly different from the controls, and irreversible damage cannot be caused by other factors.
2.4 influence of reflective film on Nitrogen content of leaf
Nitrogen is an essential part in the growth process of plants as three major nutrient elements for plant growth, is one of main components of protein, exists in cytoplasm, and exists in cell nucleus and various enzymes, and any life activity of the plants is lack of participation of the N element. The parameters of the nitrogen content of the blades in the table 3 show that in the area where the reflective film is laid, the average nitrogen content is higher than that in the area where the reflective film is not laid, the total average nitrogen content of the blades in the area where the reflective film is laid is 9.8 percent higher than that of the non-laid reflective film, the highest nitrogen content in the area where the reflective film is laid is 1.88 percent, and the nitrogen content of the blades is 16.1 percent higher than that of the non-laid reflective film. The reflecting film is laid to improve the photosynthetic transpiration rate of the leaves and the mineral nutrient element absorption capacity of the tree, so that the nitrogen content of the leaves is obviously higher than that of the areas without the reflecting film. In addition, N is also one of the main components of chlorophyll, and the increase of the content of chlorophyll also increases the nitrogen content of leaves.
TABLE 3 vane Nitrogen content parameters
| Treatment of | AverageNDGI | Highest NDGI | Lowest NDGI | Average nitrogen content (%) | Maximum nitrogen content (%) | Minimum nitrogen content (%) |
| CK-1 | 0.5200 | 0.5248 | 0.5168 | 1.54 | 1.56 | 1.53 |
| CK-2 | 0.4942 | 0.5233 | 0.4765 | 1.47 | 1.55 | 1.42 |
| CK-3 | 0.4747 | 0.5397 | 0.4190 | 1.45 | 1.62 | 1.34 |
| Reflective film-1 | 0.5574 | 0.5828 | 0.5201 | 1.74 | 1.88 | 1.54 |
| Reflective film-2 | 0.5218 | 0.5258 | 0.5140 | 1.55 | 1.56 | 1.52 |
| Reflective film-3 | 0.5383 | 0.5452 | 0.5341 | 1.61 | 1.65 | 1.59 |
2.5 influence of the reflective film on fruit quality
2.5.1 influence of the reflective film laid on the Tree trays on the weight of the single fruit
Film covering and light supplementing are started in the middle of fruit expansion, and the illumination intensity of a light supplementing lamp is set to be 1200 mu mol m -2 ·s -1 And the light supplement time is 7-12 points at night for 5 hours, and fruit sampling and related data measurement are carried out every 8 days after the tree disc is paved with the reflective film. As can be seen from fig. 7, the single fruit weights of the comparison group and the light supplement group both show a relatively uniform increasing trend, and the single fruit weight of the light supplement group is heavier than that of the comparison group at each stage. By day 1 of 10 months, the single fruit weights of the control group and the light supplement group are 1540.1 g and 1666.5 g respectively, and the difference between the two groups is 126.4 g. On day 8 after the reflective film was applied, the difference between the control group and the experimental group was more significant after day 18, the difference was reduced at day 27, and the difference at day 41 was closest to the difference at day 8. Therefore, the tree disk paved with the reflective film has obvious influence on the weight of the single fruit.
2.1.2 influence of the reflective film laid on the Tree disks on the thickness of the pericarp
As can be seen from fig. 8, the peel thickness of the control group and the light supplement group decreased as the fruit grew and matured. The reduction trend of the thickness of the pericarp is slower in 18 days after the reflective film is laid, and the reduction trend of the thickness of the pericarp is more obvious after 18 days; after the reflective film is laid, the peel thickness of the control group and the experimental group gradually becomes different. On the 8 th day after the reflective film is laid, the peel thicknesses of the control group and the experimental group are respectively 2.20 cm and 2.11 cm, and the difference between the two groups is 0.10 cm; on the 41 th day after the reflective film was applied, the peel thicknesses of the control group and the light supplement group were 2.00 cm and 1.66 cm, respectively, with a difference of 0.31 cm between the two groups. Therefore, the tree disk paved with the reflective film has a remarkable effect on reducing the thickness of the fruit peel. Reason analysis shows that the moisture of the soil is reduced after the reflective film is laid on the tree disc, fruit ripening is promoted, substance conversion and accumulation related to fruit ripening are promoted, and therefore the thickness of the fruit peel is reduced.
2.1.3 influence of reflective film on transverse and longitudinal diameters of fruit
As can be seen from fig. 9, the transverse and longitudinal diameters of the control group and the light supplement group both increase at a constant speed along with the growth of the fruit. The transverse diameter is relatively slowly increased from 8 th to 18 th days after the reflective film is laid, and is rapidly increased after 18 days; the longitudinal diameter is increased more rapidly in 27 days after the reflective film is laid, and the increase speed is reduced after 27 days. The transverse diameters of the contrast group and the light supplement group are obviously different 18 days after the reflective film is laid, the maximum difference value is 0.92 cm on day 8, the difference value is reduced 18 days later, the difference value of the two groups is 0.53 cm on day 41, but the transverse diameter of the total light supplement group is larger than that of the contrast group; the longitudinal diameters of the contrast group and the light supplement group are approximately equal, and no obvious difference exists. From this, it was found that the application of the light reflecting film to the tree disk had an influence on the transverse diameter of the fruit, and did not significantly affect the longitudinal diameter of the fruit.
2.1.4 influence of reflective film on soluble solid of pulp laid on Tree tray
As can be seen from fig. 10, the soluble solid content of the control group and the light supplement group showed a decreasing trend as the fruit grows. After the reflective film is laid, the soluble solid of the control group is reduced at a more uniform speed; the light supplement group had a reduced soluble solids content after the first 8 and 27 days, and the soluble solids content was more stable from day 8 to day 27. After the reflective film is laid, the content of soluble solids of the light supplementing group gradually exceeds that of the light supplementing group and gradually widens the difference. On the 8 th day of laying the reflective film, the content of soluble solids of the reference group and the content of soluble solids of the light supplementing group are respectively 12.30 percent and 12.52 percent, and the difference between the two groups is 0.23 percent; on day 41, the contents of the two groups were 10.90% and 12.20%, respectively, with a difference of 1.33%. Reason analysis shows that the reason that the content of the soluble solids is in a descending trend along with the growth of the fruits is probably because less rain exists in the early stage and the water content of the soil is low, so that the water content of the fruits is reduced, the content of the soluble solids is high, most of the fruits are rainy in the later stage, and the water content of the soil is high, so that the water content of the fruits is high and the content of the soluble solids is low. The light filling group is paved with a reflective film, so that rainwater is difficult to permeate into the root system of the tree body, and the influence of rainy weather is less.
2.1.5 influence of reflective film laid on Tree disc on transverse and longitudinal diameters of fruit pulp
As can be seen from fig. 11, the transverse and longitudinal diameters of the fruit pulp in the control group and the light supplement group both increase at a constant speed as the fruit grows. After the reflective film is laid on the tree disc, the transverse diameters of the pulp of the comparison group and the pulp of the light supplementing group are approximately the same, and the difference is not large; the difference of the longitudinal diameter of the fruit pulp is smaller in the first 27 days, the difference between the two groups is about 2-3 mm, the difference is gradually increased after 27 days, and the maximum difference between the two groups is 11.71 mm at 41 days. Therefore, the reflective film laid on the tree disc has no influence on the transverse diameter of the pulp and has a more obvious influence on the longitudinal diameter of the pulp.
2.1.6 influence of reflective film laid on Tree tray on fruit pulp area
As can be seen from fig. 12, the areas of the flesh of the control group and the light supplement group gradually increased with the growth of the fruits. After the reflective film is laid, the area of the pulp of the light supplementing group gradually exceeds that of the contrast group, and a relatively stable difference is maintained in each growth stage. The fruit pulp area of the light supplementing group is 238.37 mm larger than that of the control group on the 8 th day after the light reflecting film is laid 2 (ii) a On day 41, the light supplement group was 368.17 mm larger than the control group 2 . Therefore, the reflective film is laid to obviously increase the area of the fruit pulp. As can be seen from fig. 12, the cross-sectional areas of the control group and the light supplement group gradually increased with the growth of the fruit. The sectional area of the light supplementing group in the first 27 days after the light reflecting film is laid exceeds that of the control group, small difference occurs and is maintained for a period of time, the difference is reduced, and the sectional areas of the two groups are approximately the same after 27 days. Comparing the two diagrams in fig. 12, it can be seen that the cross-sectional areas of the comparison group and the light supplement group are substantially the same, and the area of the flesh of the light supplement group is larger than that of the comparison group, so that the effect of laying a reflective film on the fruit tree disk on the cross-sectional area of the fruit is not significantly affected, and the effect of increasing the area of the flesh is significantly achieved.
2.1.7 influence of the reflective film on the outer perimeter of the fruit
As can be seen from fig. 13, the peripheral growth of the control group and the experimental group increased with the fruit growth. After the reflective film is laid, the outer circumferences of the control group and the light supplement group are approximately equal and have no obvious difference in the first 17 days, the outer circumference of the light supplement group starts to exceed the control group after 17 days, the difference gradually increases, and the difference between the outer circumferences of the two groups on the 41 th day is 34.05 mm. Therefore, the reflective film laid on the tree disc has a remarkable influence on the later growth stage of the fruit.
2.1.8 influence of tree disk-paved reflective film on various appearance indexes
As can be seen from table 4, the fruit shape indexes of the control group and the light supplement group at each stage are approximately the same and are both greater than 1, and the fruit shape is oblong. The comparison of the fruit shape indexes shows that the reflective film has no obvious influence on the fruit shape indexes. The symmetry indexes of the contrast group and the light supplement group are 0.999 at each stage, and the symmetry of the fruits is not affected by the reflective film. The aspect ratio of the pulp of the comparison group is larger than that of the light supplement group at each stage, and the result of the overall fruit shape index shows that the aspect ratio of the pulp can be reduced by laying the reflective film, so that the area of the pulp is increased, and the result is the same as that obtained in fig. 12. The flesh color of each stage of the contrast group is lighter than that of the light supplement group, so that the flesh color of the fruit can be deepened by paving the reflective film.
TABLE 4 comparison of various appearance indexes of the control group and the fill-in light group
| Date of day | Fruit shape index | Index of symmetry | Transverse to longitudinal ratio of pulp | Flesh color | |
| Control group | 8.21 | 1.144 | 0.999 | 2.063 | Color of meat |
| 8.29 | 1.175 | 0.999 | 2.038 | Light pink color | |
| 9.8 | 1.291 | 0.999 | 2.201 | Light pink color | |
| 9.17 | 1.180 | 0.999 | 2.083 | Light pink color | |
| 10.1 | 1.163 | 0.999 | 2.178 | Light pink color | |
| Light supplement set | 8.21 | 1.144 | 0.999 | 2.063 | Light pink color |
| 8.29 | 1.242 | 0.999 | 1.982 | Light red | |
| 9.8 | 1.191 | 0.999 | 2.059 | Orange red | |
| 9.17 | 1.105 | 0.999 | 1.982 | Orange red | |
| 10.1 | 1.083 | 0.999 | 1.905 | Orange red |
2.2 influence of the reflective film on the yield
As can be seen from Table 5, the tree vigor related indexes such as the plant height, the trunk circumference, the plant row spacing and the tree crown of the selected fruit trees are approximately equal, the single fruit weight of the light supplement group is larger than that of the control group, and the yield per mu of the single plant yield of the light supplement group is larger than that of the control group through calculation. The result shows that the illumination intensity of the light supplement lamp is set to 1200 mu mol m -2 ·s -1 Tonifying from the middle of fruit enlargementAnd (3) supplementing light at 7-12 points at night for 5 hours, and paving a reflective film on the tree disk, so that the accumulation of photosynthetic products of the honey pomelo leaves can be promoted, and the fruit quality is improved. The reason analysis shows that the fruit quality can not be kept under the environmental conditions of sunlight, air, water, temperature and the like. The reflective film has the functions of brightening, warming and water retaining, thus improving the photosynthesis speed and being beneficial to the fruit to be enlarged and mature.
TABLE 5 influence of the reflective film on the fruit yield
| Plant height (m) | Dry week (cm) | Plant row spacing (m) | Crown (m) | Weight of single fruit (g) | Yield per plant (kg) | Yield per mu (kg) | |
| Light supplement | 3.17 | 39.6 | 3.71×3.12 | 3.00×2.72 | 1216.7 | 52.32 | 3014 |
| Control | 3.20 | 40.0 | 3.71×2.98 | 2.75×2.70 | 1150.0 | 47.15 | 2844 |
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The method for improving the quality of the grapefruit fruits is characterized by comprising the following steps of: firstly, paving a layer of ground fabric (1) on a tree planting land, wherein the ground fabric (1) is woven by a plurality of vertically and horizontally arranged plastic fibers;
secondly, additionally laying a layer of reflective film (2) on the ground cloth (1);
and thirdly, supporting rods (3) are installed on the planting ground at intervals, the height of each supporting rod (3) can be adjusted according to the height of the tree body, a plurality of light supplement lamps (5) are arranged between every two adjacent supporting rods (3), and electric wires (6) are connected between every two adjacent light supplement lamps (5).
2. The method according to claim 1, wherein the method comprises the following steps: the illumination intensity of the light supplement lamp (5) is set to be 1200 [ mu ] mol.m -2 ·s -1 And 5 hours of light supplement at 7-12 points at night.
3. The method according to claim 1, wherein the method comprises the following steps: the ground fabric (1) can be laid when fruit trees begin to be planted, and the reflective film (2) begins to be coated in the middle of fruit expansion.
4. The method according to claim 1, wherein the method comprises the following steps: the electric wire (6) is provided with a connecting seat (7), the connecting seat (7) is circumferentially provided with an annular blocking edge (71) protruding outwards, and the cross section of the annular blocking edge (71) is hexagonal.
5. The method according to claim 4, wherein the method comprises the following steps: the light supplementing lamp (5) comprises a base (51) and a lampshade (52), wherein a water guide plate (52) which is obliquely and downwards arranged from a position close to the connecting seat (7) to a position far away from the connecting seat (7) is arranged at one end, close to the connecting seat (7), of the base (51).
6. The method according to claim 1, wherein the method comprises the following steps: the utility model discloses a planting method, including the bracing piece, including the stake (31) of pegging graft on planting ground, bracing piece (3) are still including establishing loop bar (32) outside stake (31) at the cover, set up jack (311) that a plurality of length direction along stake (31) seted up on stake (31), jack (311) run through the both sides of stake (31), also set up perforation (321) on the length direction of loop bar (32), it has bolt (9) of connecting perforation (321) and jack (311) to peg graft between bracing piece (3) and loop bar (32).
7. The method for improving the quality of the pomelo fruit according to claim 6, wherein: the through hole (321) is a waist-shaped hole.
8. The method according to claim 4, wherein the method comprises the following steps: the wire winding support is characterized in that a connecting end (72) is arranged on the connecting seat (7), a connecting hole (73) is formed in the connecting end (72), an iron wire (4) is detachably connected between the adjacent supporting rods (3), and a winding wire (8) is arranged between the connecting end (72) and the iron wire (4).
9. The method according to claim 4, wherein the method comprises the following steps: the connecting seat (7) and the electric wire (6) are integrally cast.
10. The method according to claim 8, wherein the method comprises the following steps: the top end of the supporting rod (3) is provided with a bearing seat (10) used for bearing an electric wire (6) and an iron wire (4).
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