CN111109063A - Water-fertilizer coupling supply method for limited cultivation of Lingwu long jujube root zone in greenhouse - Google Patents
Water-fertilizer coupling supply method for limited cultivation of Lingwu long jujube root zone in greenhouse Download PDFInfo
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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
- A01G31/00—Soilless cultivation, e.g. hydroponics
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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Abstract
A water and fertilizer coupling supply method for root zone limited cultivation of Lingwu long jujube in greenhouse comprises placing planting container in sunlight greenhouse, root-limited cultivation of long jujube plant in the planting container, and using coconut coir as culture medium; applying a water-soluble fertilizer in a planting container, wherein the proportion of elements in the water-soluble fertilizer is N: P2O5:K2O =2:1:1.5, wherein the fertilizing amount of the water-soluble fertilizer is 0.18-0.54 kg per plant, and drop irrigation is carried out, and the irrigation amount is 180-360L per plant, so as to control the water and fertilizer content in the soil; the invention controls the temperature in the sunlight greenhouse and the temperature of the culture medium, supplies water and fertilizer which can meet the growth of the long jujube plants under the mode of root zone limited cultivation, can utilize water and nutrients to the maximum extent, improves the utilization rate of the water and fertilizer to the maximum extent, can guide the longitudinal growth of the root systems of the long jujube plants, enhances the resistance by the water and fertilizer, and avoids the defects that the root systems are difficult to fertilize and are easy to damage.
Description
Technical Field
The invention relates to the technical field of fruit tree cultivation, in particular to a water and fertilizer coupling supply method for root zone limited cultivation of Lingwu long jujubes in a greenhouse.
Background
The absorption of the root system of the long jujube plant to water and nutrients is relatively independent, but the effects of the water and the nutrients on the growth of the long jujube plant are mutually restricted, the water deficiency or the nutrient deficiency can generate adverse effects on the growth of the long jujube plant, and the phenomenon that the water and the nutrients mutually affect the growth of the long jujube plant is called as a water coupling effect. The water and fertilizer coupling means that according to the requirements of the long jujube plants on water and fertilizer at different growth stages, water and fertilizer are reasonably irrigated and applied, the growth of the long jujube plants is promoted to the greatest extent, the utilization efficiency of the water and fertilizer is improved, and the aims of promoting the fertilizer by water, regulating the water by fertilizer, increasing the yield and improving the quality are fulfilled. The water and fertilizer coupling can promote the root growth of the jujube plants and improve the utilization efficiency of soil water; improve the transpiration and photosynthesis of the long jujube plants. However, the water and fertilizer utilization rate of the root system of the long jujube plant still needs to be improved by simply adopting a water and fertilizer coupling technology, and how to take comprehensive measures to utilize water and nutrients to the maximum extent has extremely wide development space.
Disclosure of Invention
In view of the above, there is a need for a water and fertilizer coupling supply method for limited cultivation of root zone of lingwu jujubes in a greenhouse, which can maximize the utilization rate of water and fertilizer.
A water and fertilizer coupling supply method for limited cultivation of Lingwu long jujube root areas in a greenhouse comprises the following steps:
placing the planting container in a sunlight greenhouse, and carrying out root-limiting cultivation on the long jujube plants in the planting container by taking coconut coir as a cultivation medium;
applying a water-soluble fertilizer in a planting container, wherein the proportion of elements in the water-soluble fertilizer is N: P2O5:K2O2: 1:1.5, the fertilizing amount of the water-soluble fertilizer is 0.18-0.54 kg per plant, drip irrigation is carried out,the irrigation quantity is 180-360L per plant to control the water and fertilizer content in the soil;
the temperature in the sunlight greenhouse and the temperature of the culture medium are controlled.
Under the mode of root zone limited cultivation, the invention supplies water and fertilizer which meet the growth of the long jujube plants, can utilize water and nutrients to the maximum extent, improves the utilization rate of the water and fertilizer to the maximum extent, can guide the longitudinal growth of the root systems of the long jujube plants, enhances the resistance by the water and fertilizer, and avoids the defects that the fertilizer is not easy to apply and the root systems are easy to damage.
Drawings
Fig. 1 is an isometric view of the planting container.
FIG. 2 shows the effect of water and fertilizer coupling on the ground diameter of plants.
FIG. 3 shows the effect of water and fertilizer coupling on the young shoot length of plants.
FIG. 4 shows the effect of water and fertilizer coupling on the base diameter of the young shoots of plants.
FIG. 5 shows the effect of water and fertilizer coupling on the length of a jujube tree.
FIG. 6 shows the effect of water and fertilizer coupling on the plant jujube pod thickness.
FIG. 7 shows the effect of water and fertilizer coupling on plant leaf area.
FIG. 8 shows the effect of water and fertilizer coupling on the fresh weight of a single leaf.
FIG. 9 is a graph showing the effect of water-fertilizer coupling on the dry weight of a single leaf.
Fig. 10 is a partial schematic view of the planting container.
In the figure: the barrel 10, the guide vertical edge 20, the bottom air holes 30 and the side air holes 40.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
The embodiment of the invention provides a water and fertilizer coupling supply method for limited cultivation of root areas of Lingwu long jujubes in a greenhouse, which comprises the following steps:
placing the planting container in a sunlight greenhouse, and carrying out root-limiting cultivation on the long jujube plants in the planting container by taking coconut coir as a cultivation medium;
applying a water-soluble fertilizer in the planting container, wherein the proportion of elements in the water-soluble fertilizer is N: P2O5:K2O is 2:1:1.5, the fertilizing amount of the water-soluble fertilizer is 0.18-0.54 kg per plant, and drip irrigation is carried out, the watering amount is 180-360L per plant, so as to control the water and fertilizer content in the soil;
the temperature in the sunlight greenhouse and the temperature of the culture medium are controlled.
The root-limiting cultivation is a cultivation technology for directly regulating and controlling the growth and development of root systems, and refers to a cultivation technology for artificially limiting plant root systems in a certain medium or space, controlling the volume and quantity of root systems, changing the distribution and structure of the root systems, optimizing the function of the root systems, and regulating the growth and development of the whole plant through the root systems, thereby realizing high yield, high efficiency and high quality.
Reasonable irrigation and accurate fertilization can effectively improve the water and fertilizer utilization rate of the long jujube plants, promote the growth of the long jujube plants and save the production cost. The overground vegetative growth of the long jujube plants can be effectively controlled by adopting a root-limiting cultivation mode, so that the sprouting and the flower formation of the long jujube plants are promoted, and a good foundation is laid for improving the fruit quality in the early stage.
Under the mode of root zone limited cultivation, the invention supplies water and fertilizer which meet the growth of the long jujube plants, can utilize water and nutrients to the maximum extent, improves the utilization rate of the water and fertilizer to the maximum extent, can guide the longitudinal growth of the root systems of the long jujube plants, enhances the resistance by the water and fertilizer, and avoids the defects that the fertilizer is not easy to apply and the root systems are easy to damage.
Further, the amount of irrigation was 270L/plant and the amount of fertilizer application was 0.27 kg/plant.
Referring to fig. 1, further, the field planting container includes a cylindrical barrel 10, the top end of the cylindrical barrel 10 is open, the other end of the cylindrical barrel 10 opposite to the open end is a barrel bottom, a guide vertical rib 20 is arranged on the inner side of the side wall of the cylindrical barrel 10, the guide vertical rib 20 extends to the barrel bottom along the open end of the cylindrical barrel 10, the extending direction of the guide vertical rib 20 is parallel to the axial direction of the cylindrical barrel 10, a bottom vent hole 30 is arranged on the barrel bottom, the bottom vent hole 30 is arranged close to the center of the barrel bottom, the bottom vent holes 30 are arranged in concentric circles along the center of the barrel bottom, side vent holes 40 are arranged on the side wall of the cylindrical barrel 10, and the distance between the side vent holes 40 and the barrel bottom is less than 10 cm.
In this embodiment, be equipped with guide vertical rib 20 at barrel 10 inboard, the effect that inside prominent guide vertical rib 20 can guide root system to grow, and the bottom bleeder vent 30 that sets up in the position that the bobbin base is close to the bobbin base centre of a circle utilizes the principle that the root was repaiied to the air, makes the root system of plant press close to barrel 10 lateral wall inboard to extend the growth downwards, greatly reduced the nest root rate of plant.
The side bleeder vent 40 in this embodiment also designs as the effect of pruning the root, and when the root system extended to the position of side bleeder vent 40 downwards, the root point contacted the air, and the root point stops growing and a plurality of new roots of growing again in root point rear portion, increased short and thick side root quantity, guaranteed the quality of root.
Furthermore, the planting container is a plastic basin, and the diameter and the height of the planting container are 0.6m and 0.5m respectively.
Furthermore, the upper caliber of the planting container is 0.65m, the diameter of the bottom is 0.4m, and the height of the pot is 0.5 m.
Further, the temperature of the culture medium is 25 ℃, and the temperature in a sunlight greenhouse is 25 ℃.
Furthermore, the long jujube plants are 4-year-old Lingwu long jujube plants, and the water-soluble fertilizer is a macroelement water-soluble fertilizer of Strobing.
Furthermore, the sunlight greenhouse is in an east-west trend, the east-west length of the sunlight greenhouse is 60m, the north-south span is 10m, and the wall body is a soil wall.
Furthermore, 6 rows of planting containers are arranged in the sunlight greenhouse from east to west, and each row comprises 90 planting containers.
Further, drip irrigation is carried out by using water and fertilizer integrated equipment.
Referring to fig. 10, in a specific embodiment, the connection between the guiding vertical rib 20 and the bottom of the cylinder 10 is a circular arc transition to provide a guiding function for the growth direction of the root tip and avoid root nesting.
The invention is further illustrated by the following examples and comparative examples, which are intended to illustrate the invention in detail and are not to be construed as limiting the scope of the invention in any way.
Test materials: the test is carried out in a sunlight greenhouse, the specification of the sunlight greenhouse is that the length of the sunlight greenhouse is about 60m, the span of the sunlight greenhouse is about 10m, and the wall body is a soil wall; the test uses Lingwu long jujube 4-year-old plants as materials, each plant is planted in a planting container with the diameter of 0.6m and the height of 0.5m, coconut chaff is used as a culture medium, a major element water-soluble fertilizer of Strobius schoensis is applied, a water-fertilizer integrated drip irrigation system is adopted to control the water-fertilizer content of soil, the planting container is a plastic basin, the upper caliber is 65cm, the bottom diameter is 40cm, and the basin height is 50 cm; 6 rows of potted Lingwu long jujube plants are arranged in the greenhouse from east to west, each row has 90 pots, and each greenhouse has 540 pots, namely 540 Lingwu long jujube plants; the temperature in the greenhouse is controlled to be about 35 ℃, and the temperature of the culture medium is about 25 ℃.
And (3) experimental design: as shown in Table 1, 2 factors of irrigation quantity and fertilization quantity are set in the experiment, and the water and fertilizer are completely treated by adopting 2 factor 3 levels, namely the irrigation quantity in one growth cycle is set to be three levels of 180L/plant (A1), 270L/plant (A2) and 360L/plant (A3), and the fertilization quantity is N: P2O5:K2A total of 9 treatment combinations were tested at a ratio of 2:1:1.5, at three levels of 0.18 kg/plant (B1), 0.27 kg/plant (B2), and 0.54 kg/plant (B3), with examples 1 to 9 for each 9 trees treated; and taking 9 jujube trees cultivated in a conventional irrigation, fertilization and root limitation way (namely under the conventional water and fertilizer treatment (CK)) as a control, and selecting 90 trees in total in the test as a comparative example 1.
TABLE 1 combination of different irrigation and fertilization amounts
| Treatment of | Irrigation quantity (L/plant) | Amount of fertilizer applied (kg/plant) | |
| Example 1 | A1B1 | 180(A1) | 0.18(B1) |
| Example 2 | A1B2 | 180(A1) | 0.27(B2) |
| Example 3 | A1B3 | 180(A1) | 0.54(B3) |
| Example 4 | A2B1 | 270(A2) | 0.18(B1) |
| Example 5 | A2B2 | 270(A2) | 0.27(B2) |
| Example 6 | A2B3 | 270(A2) | 0.54(B3) |
| Example 7 | A3B1 | 360(A3) | 0.18(B1) |
| Example 8 | A3B2 | 360(A3) | 0.27(B2) |
| Example 9 | A3B3 | 360(A3) | 0.54(B3) |
The index measuring method comprises the following steps: the test is carried out in thousands of mu facility gardening bases in big spring forest farm good reproduction field of Ningxia Lingwu city from 3 months in 2019 to 8 months in 2019, and the index is measured 1 time per month.
Measuring the ground diameter, the young sprout emergence number, the young sprout length and the young sprout base diameter of the Lingwu long jujube plant: the number of shoots taken out of each tree was recorded, and the shoot length (cm), the plant ground diameter (mm) and the shoot base diameter (mm) were measured using a steel tape and a vernier caliper.
Measuring the length of the jujube hanging, the thickness of the jujube hanging, the number of leaves of the jujube hanging, the number of flowers of the jujube hanging and the number of the jujube hanging: selecting 1 jujube crane in the southeast, northwest direction of each tree, measuring the length (cm) and the thickness (mm) of the hung jujube crane by using a steel tape and a vernier caliper, and observing and recording the leaf number and the flower number of the jujube crane: the unit is "number".
Leaf area and chlorophyll determination: collecting 1 healthy leaf in 4 directions of south and east of crown periphery of each tree, and measuring leaf area with leaf area measuring instrument (YMJ-C) in cm2(ii) a By using SY-S02Chlorophyll content, unit (SPAD), of leaf is measured by a chlorophyll meter.
Measurement of fresh and dry weight and leaf thickness of single leaf: measuring the fresh weight of each leaf in unit g by using an electronic balance; measuring the dry weight of the single leaf in unit g by a drying to constant weight method; the total thickness of each tree is measured by 10 leaves with a vernier caliper, and the average value is calculated to obtain the thickness of a single leaf in unit mm.
Actual measurement values of the plant ground diameter, the young sprout length, the young sprout base diameter, the jujube hanging length, the jujube hanging thickness, the leaf area and the single leaf dry weight measured from 3 months to 8 months in 2019 are respectively shown in fig. 2 to 9, the actual measurement values are subjected to growth amounts before and after 5 months to obtain the growth amounts shown in tables 2, 3 and 4, and the tables 2, 3 and 4 are subjected to data analysis processing, wherein the analysis results are as follows:
TABLE 2 influence of water and fertilizer coupling on the number of young shoots and the net increase in the ground diameter and length of young shoots
TABLE 3 influence of water and fertilizer coupling on the number of jujube hangers per plant and the rough and net growth of jujube hangers
TABLE 4 Effect of Water and Fertilizer coupling on leaf area, fresh weight per leaf, and net increase in dry weight per leaf
Results and analysis: the jujube tree belongs to a fruit tree with unlimited growth, the effective growth of the root, branch, leaf and other nutrient organs of the jujube tree is vital, the jujube tree can be opened and scattered, the tree shape is enhanced, a large amount of nutrient substances can be accumulated, and a material basis is provided for the growth of reproductive organs such as flowers, fruits and the like. The experiment dynamically measures related indexes such as young tips, jujube hangers, leaves and the like of the root-limited cultivation Lingwu long jujube plants under water and fertilizer coupling treatment in the annual growth period, and measures the thickness of the leaves in the fruit mature period.
Referring to fig. 2 and table 2, the diameter of the plant at a position 10cm away from the surface of the substrate in the growth period of zizyphus mauritiana is determined through the test, the ground diameter of the plant is determined for 5 times in the test process, the ground diameter of the plant is determined to be between 49.63mm and 52.59mm in the initial stage of the test, the ground diameter of the plant is determined to be between 51.31mm and 54.91mm in the end of the test, and it can be seen that the ground diameter of the plant is obviously increased in the test period, and the period from 3 months to 4 months is the period when the ground diameter of the plant is increased most rapidly, and the. The plant ground diameter shows different growth trends under the treatment of various water and fertilizers, the net increment of the plant ground diameter in the whole growth cycle is 1.67 mm-3.84 mm, wherein the plant ground diameter is increased most obviously under the treatment of 270L of irrigation amount per plant and 0.27kg of fertilization amount per plant, the net increment is 3.84mm, the growth trends of the other treatment ground diameters are basically consistent, and the difference is not obvious. Under the conventional water and fertilizer treatment (CK), the net increase of the ground diameter of the plants is 2.52mm, and the net increase of the ground diameter of the plants under the treatment of A1B2, A2B1, A2B2, A2B3 and A3B2 is higher than that of the plants under the treatment of CK.
Referring to fig. 3 and table 2, young shoots are important nutritional organs of lingwu jujubes, and can transmit assimilates generated by leaves to fruits, the growing conditions of the young shoots refer to both quantity and quality, and the growing quantity of the young shoots can reflect the nutritional growing conditions of trees. The young sprout growth amount of the Lingwu long jujube under different water and fertilizer treatments is compared and analyzed, and the law of influence of the water and fertilizer on the young sprout growth amount is obtained, thereby being beneficial to better guiding practice irrigation amount and fertilization amount. The young sprout length is measured for 5 times in total during the test period, wherein the young sprout rapidly grows from 3 months to 4 months, then the growth is slow, the growth trend is basically kept unchanged, and the net growth amount of the young sprout length is 21.9 cm-31.7 cm in the whole annual growth period. Under the interaction of water and fertilizer, the growth trend of the length of the new tip is obviously faster when the irrigation quantity is 270L per plant and the fertilizing quantity is 0.27kg per plant, and the net growth quantity is 31.7 cm; the growth of the new shoot length is slower when the irrigation amount is 270L per plant and the fertilizing amount is 0.54kg per plant, and the net growth amount is 20.3 cm; the net increment of young sprout length was 31.2cm under conventional liquid manure treatment (CK).
Referring to fig. 4 and table 2, the change of the base diameter of the young sprout is measured 5 times during the test period, the base diameter of the young sprout grows rapidly from 3 months to 4 months, the growth is slow after 4 months, the growth trend is basically kept unchanged, and the net growth amount of the base diameter of the young sprout is 2.24 mm-3.28 mm in the whole annual growth period. Under the interaction of water and fertilizer, the net increment of the base diameter of the young shoots is obvious in difference, the growth trend of the base diameter of the young shoots is obvious and fast when the irrigation amount is 270L per plant and the fertilization amount is 0.27kg per plant (A2B2), and the net increment is 3.28 mm; when the irrigation amount is 180L/plant and the fertilizing amount is 0.18 kg/plant, the base diameter of the new shoot is slowly increased, and the net increase amount is 2.24 mm; under the conventional water and fertilizer treatment (CK), the net increase of the base diameter of the young shoots is 2.74mm, and compared with the conventional water and fertilizer treatment (CK), the small water and the large amount of fertilizer are not beneficial to the growth of the base diameter of the young shoots of the Lingwu jujube.
Referring to fig. 5 and table 3, the length of the jujube hanging is measured 4 times in the test period, under different water and fertilizer treatments, the length of the lingwu long jujube hanging is approximately increased in an S-shaped curve, wherein the length of the jujube hanging is in a rapid increase stage from 4 months to 6 months, the length of the jujube hanging is slowly increased from 6 months to 7 months, the increase is small, and the net increase of the length of the jujube hanging is 9.8 cm-12.4 cm in the whole annual growth period. Under the interaction of water and fertilizer, the growth trend of the length of the jujube hanging is the fastest when the irrigation quantity is 270L/plant and the fertilization quantity is 0.27 kg/plant, the net growth quantity is 12.4cm, the growth trends of the lengths of other treated jujube hanging are basically consistent, the difference is not obvious, under the conventional water and fertilizer treatment (CK), the net growth of the length of the jujube hanging is 12.1cm, and the irrigation quantity is 270L/plant and the fertilization quantity is 0.27 kg/plant, which is more beneficial to the growth of the length of the jujube hanging compared with the conventional water and fertilizer treatment (CK).
Referring to fig. 6 and table 3, the thickness of the jujube hanging is measured for 4 times in the test period, under different water and fertilizer treatments, the thickness growth trend of the Lingwu long jujube hanging is approximately in an S shape, the thickness growth of the jujube hanging is rapid from 4 months to 6 months, the thickness growth of the jujube hanging is slow from 6 months to 7 months, the growth amount is small, and the net growth amount of the thickness of the jujube hanging is 0.9 mm-1.4 mm in the whole annual growth period. Under the interaction of water and fertilizer, the growth trend difference of the thickness of the treated jujube hanging is obvious, the thickness of the jujube hanging is obviously increased faster than that of other treatments when the irrigation quantity is 270L/plant and the fertilization quantity is 0.27 kg/plant, the net increase of the jujube hanging is 1.4mm, the thickness of the jujube hanging is slowest when the irrigation quantity is 360L/plant and the fertilization quantity is 0.18 kg/plant, the net increase of the jujube hanging is 0.9mm, and the net increase of the thickness of the jujube hanging is 1.2mm under the conventional water and fertilizer treatment (CK), so the irrigation quantity is 270L/plant and the fertilization quantity is 0.27 kg/plant, which is favorable for the thickness growth of the jujube hanging.
See alsoFig. 7, fig. 8, fig. 9 and table 4 show that the leaf area, the fresh weight of a single leaf and the dry weight of a single leaf are respectively measured for 5 times in the growth period of the Lingwu long jujube plant, and the leaf area of the Lingwu long jujube is increased at a high speed in a sprouting period until the leaf area is gradually decreased in a fruit setting period. Under the interaction of water and fertilizer, the net increment difference of the leaf area is obvious. The irrigation amount is 270L/plant, the fertilizing amount is 0.27 kg/plant, the area of the treated lower leaves is increased most, and the average increase amount is 3.81cm2The irrigation quantity is 180L/plant, the fertilizing quantity is 0.18 kg/plant, the growth quantity of the area of the treated lower leaves is minimum, and the average growth quantity is 2.04cm2(ii) a The net increment of leaf area in conventional liquid manure treatment (CK) is 2.88cm2The growth amount is moderate compared with other treatments. The fresh weight of a single leaf of the Lingwu long jujube cultivated by the limited root is rapidly increased before the flowering phase in the annual growth period and then slowly increased or kept unchanged. The net weight gain difference of the fresh leaves under the interaction of water and fertilizer is obvious, the average net weight gain of the fresh leaves in the conventional water and fertilizer treatment (CK) is 0.044g, which is 0.035g lower than that of the fresh leaves treated by water irrigation amount of 270L per plant and fertilizer application amount of 0.27kg per plant, and 0.07 g-0.46 g higher than that of the fresh leaves treated by other plants. The influence change trend of different irrigation and fertilization treatments on the dry weight of the single leaf of the Lingwu long jujube is basically consistent with the leaf area and the fresh weight of the single leaf, the net increase difference of the dry weight of the single leaf under different water and fertilizer treatments is obvious, the net increase of the dry weight of the single leaf under the treatment of 270L of plant and 0.27kg of fertilization quantity per plant is the largest, the average value is 0.035g and is far higher than that of the conventional water and fertilizer treatment (CK), and the influence of the irrigation quantity on the dry weight of the single leaf is more obvious than that of the fertilization quantity; the leaves with small fresh weight and large dry weight have low water content and low water utilization efficiency, and have weaker physiological performance compared with other treatments.
In conclusion, the whole growth condition of the Lingwu long jujube plants in the test period is better, and the growth is slow after 3 months to 4 months when the whole growth of the plants is fastest; under the treatment of the irrigation amount of 270L per plant and the fertilization amount of 0.27kg per plant, the growth conditions of Lingwu long jujube plants, jujube hanging growth and leaf growth are all superior to those of the conventional water and fertilizer treatment, the performance is best in 9 treatment combinations, and the method can be popularized and used in actual production. The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.
The modules or units in the device of the embodiment of the invention can be combined, divided and deleted according to actual needs.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A water and fertilizer coupling supply method for limited cultivation of Lingwu long jujube root areas in a greenhouse is characterized by comprising the following steps:
placing the planting container in a sunlight greenhouse, and carrying out root-limiting cultivation on the long jujube plants in the planting container by taking coconut coir as a cultivation medium;
applying a water-soluble fertilizer in a planting container, wherein the proportion of elements in the water-soluble fertilizer is N: P2O5:K2O =2:1:1.5, wherein the fertilizing amount of the water-soluble fertilizer is 0.18-0.54 kg per plant, and drop irrigation is carried out, and the irrigation amount is 180-360L per plant, so as to control the water and fertilizer content in the soil;
the temperature in the sunlight greenhouse and the temperature of the culture medium are controlled.
2. The method for supplying water and fertilizer in a greenhouse by limiting the root zone of Lingwu jujube as claimed in claim 1, wherein: the irrigation amount is 270L per plant, and the fertilization amount is 0.27kg per plant.
3. The method for supplying water and fertilizer in a greenhouse by limiting the root zone of Lingwu jujube as claimed in claim 1, wherein: the field planting container includes a cylindricality barrel, the top end opening of cylindricality barrel, the other end that cylindricality barrel is relative with the opening is the bobbin base, is equipped with the guide at the lateral wall inboard of cylindricality barrel and erects the arris, the guide erects the arris and extends to the bobbin base along the open end of cylindricality barrel, the extending direction of guide perpendicular arris is parallel with the axis direction of cylindricality barrel, is equipped with end bleeder vent at the bobbin base, end bleeder vent is close to the setting of bobbin base centre of a circle, end bleeder vent is a plurality of, end bleeder vent becomes concentric circles along the bobbin base centre of a circle and arranges, is equipped with the side bleeder vent on the lateral wall of cylindricality barrel, the distance between side bleeder vent and the bobbin base.
4. The method for supplying water and fertilizer in a greenhouse by limiting the root zone of Lingwu jujube as claimed in claim 1, wherein: the field planting container is a plastic basin, and the diameter and the height of the field planting container are 0.6m and 0.5m respectively.
5. The method for supplying water and fertilizer in a greenhouse by limiting the root zone of Lingwu jujube as claimed in claim 1, wherein: the upper caliber of the planting container is 0.65m, the diameter of the bottom of the planting container is 0.4m, and the height of the pot is 0.5 m.
6. The method for supplying water and fertilizer in a greenhouse by limiting the root zone of Lingwu jujube as claimed in claim 1, wherein: the temperature of the culture medium is 25 ℃, and the temperature in a sunlight greenhouse is 25 ℃.
7. The method for supplying water and fertilizer in a greenhouse by limiting the root zone of Lingwu jujube as claimed in claim 1, wherein: the long jujube plants are 4-year-old Lingwu long jujube plants, and the water-soluble fertilizer is a macroelement water-soluble fertilizer of Strongli.
8. The method for supplying water and fertilizer in a greenhouse by limiting the root zone of Lingwu jujube as claimed in claim 1, wherein: the sunlight greenhouse is in an east-west trend, the east-west length of the sunlight greenhouse is 60m, the north-south span is 10m, and the wall body is a soil wall.
9. The method for supplying water and fertilizer in a greenhouse by limiting the root zone of Lingwu jujube as claimed in claim 1, wherein: in the sunlight greenhouse, 6 rows of planting containers are arranged in the east-west direction, and each row comprises 90 planting containers.
10. The method for supplying water and fertilizer in a greenhouse by limiting the root zone of Lingwu jujube as claimed in claim 1, wherein: and (4) carrying out drip irrigation by using water and fertilizer integrated equipment.
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Citations (6)
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| CN202035326U (en) * | 2011-04-08 | 2011-11-16 | 杨维平 | Plant cultivation container |
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