CN108633662B - Vertical deep rotary tillage cultivation method for potatoes in semiarid region - Google Patents
Vertical deep rotary tillage cultivation method for potatoes in semiarid region Download PDFInfo
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- CN108633662B CN108633662B CN201810416442.2A CN201810416442A CN108633662B CN 108633662 B CN108633662 B CN 108633662B CN 201810416442 A CN201810416442 A CN 201810416442A CN 108633662 B CN108633662 B CN 108633662B
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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
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/25—Root crops, e.g. potatoes, yams, beet or wasabi
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
Abstract
The invention discloses a vertical deep rotary tillage cultivation method for potatoes in semiarid regions, which comprises the following steps: 1) selecting land and preprocessing; 2) applying a base fertilizer: deeply applying organic fertilizer and chemical fertilizer along with vertical deep rotation; 3) vertical deep rotation and ridging: vertically rotating the soil by 35-40cm deeply, making large ridges, reserving large ditches among the ridges, and then making small ditches in the middle of the surfaces of the large ridges; 4) coating auxiliary materials and coating films: covering the ridge surface and the furrow surface with corncob powder and wheat husks, then covering the ridge surface and the furrow surface with a black film on the whole ground, and covering the film surface on the ridge with fine soil; 5) selecting seeds and treating the seeds; 6) sowing; 7) managing the field; 8) pest control; 9) harvesting in due time; 10) and removing the waste film. The method can improve the quality and the yield of the potatoes, improve the production efficiency and the economic benefit, and is suitable for large-scale cultivation and transplantation. Tests show that the yield of the potatoes planted by the method is improved by 12.7 percent on a par, and particularly the commodity rate is improved to 75.3 percent.
Description
Technical Field
The invention belongs to the technical field of crop cultivation, and particularly relates to a vertical deep rotary tillage cultivation method for potatoes in a semi-arid region.
Background
Potatoes, wheat, rice and corn are four important grain crops. Wherein the potato has the highest protein content per unit area under the same planting conditions, and the contained protein molecules are easy to be absorbed by human bodies. In addition, potatoes also contain carotenes and ascorbic acid, which are not found in other food crops. The potato is rich in nutrition and reasonable in component structure, the VB and VC in the potato are 4 times and 10 times of those in the apple respectively, and the contents of other various mineral substances are more than 10 times of those in the apple. In daily life, food processed by taking potatoes as raw materials is particularly popular, and nutritionists call the potatoes as food with high cost performance. Potatoes have been an essential raw material in the processing industry, especially refined starch. Therefore, the potato has unique natural attributes and excellent economic and social conditions, and related industries have wide development spaces. The research of the world potato research center shows that: the global demand of potatoes is increased by 20 percent in recent 5 years, and the same-proportion increase of the potatoes over rice, wheat and corn is expected to account for more than half of the total global yield in 2020. The demand of potatoes is continuously increased, the planting technology of the growth-promoting potatoes is continuously improved, and particularly the whole-film mulching and ridging micro-furrow planting technology of the potatoes is improved. The potato full-film mulching ridging micro-furrow cultivation technology is a drought-resisting synergistic cultivation measure widely popularized in recent years in northwest dry farming areas. Its advantage is: the rainfall is collected into the furrow through the film surface, so that all rainfall in the crop growth period can be fully accommodated, and the normal seedling emergence of the potatoes is ensured; secondly, the invalid evaporation of soil moisture can be reduced, and the moisture supply in the potato growing period is ensured; thirdly, the ground temperature can be improved, the potato growing period can be prolonged, the production potential of middle and late-maturing varieties can be favorably exerted, and the yield increasing effect is obvious. Especially under the drought condition, the effect of once-preservation seedlings in spring is very prominent, so that a relatively stable farmland ecological environment is created for the growth and development of the potatoes, and main factors influencing the yield of the potatoes are comprehensively coordinated, so that the potatoes have a good growth environment, and the yield is improved. However, the longitudinal structure of the soil is changed by the traditional cultivation method (such as ploughing), the base fertilizer on the surface of the soil is turned into the soil layer, the effect of fertilizer mixing is difficult to form, and the fertilizer efficiency on the ground surface and the inside of the soil is not uniform, so that the absorption of crops is not facilitated. Therefore, the vertical deep rotary tillage combined with the full-film mulching ridging micro-furrow planting technology for the potatoes has wide application prospect.
At present, more technical reports are related to deep rotary tillage cultivation and full-film mulching ridging micro-furrow planting of potatoes, for example, in a seedling cultivation method of potatoes disclosed in patent CN 107371730A, a rotary cultivator is used for deep ploughing 20-40cm of land when loosening the soil. Solves the problem that the longitudinal structure of the soil is changed by the traditional ploughing without mixing the base fertilizer. CN 105103919A discloses a dry land potato whole-film covering ridging micro-furrow planting method, the ridging requirements are: the width of the large ridge is 60cm, the height of the large ridge is 20cm, a small ditch is arranged in the middle of the surface of the large ridge, the depth of the small ditch is 10cm, the width of the large ditch is 40cm, the width of the large ditch is uniform, and the ridge height is consistent; during film covering, adopting modes of autumn film covering and top slush film covering, after harvesting previous crops, subsoiling and drying upturned soil in time, raking and harvesting soil moisture, ridging and paving films, covering protective films with straws in areas rich in straws during autumn film covering, wherein the film covering time during autumn is from late 10 months to before soil is frozen, and the film covering time during top slush is from late 3 months to middle 3 days when soil is frozen; the film coating method comprises the following steps: covering with black mulching film, placing the seam of the mulching film in the large ditch, covering the joint with fine soil, tightly adhering the mulching film to the ridge surface, and transversely pressing a soil belt at intervals of 2-3 m; after the mulching management is finished, after the mulching is finished in the field, the mulching film is found to be damaged and covered tightly with fine soil in time, after the mulching film is covered for one week, holes are drilled in the micro-ditches and the large ditches on the ridges at intervals of 50cm when the mulching film is tightly attached to the ground, and therefore rainfall can infiltrate into the soil in time. However, the plough bottom layer is generally 30-40cm, the plough bottom layer is not broken, the root system of the crops is not favorably pricked, particularly, tubers of tuber crops are not favorably expanded, and the yield is further influenced. In addition, the fertilizing depth is shallow, which is not beneficial to the full absorption of crops.
Disclosure of Invention
The invention aims to: the method for cultivating potatoes in the semiarid region by vertical deep rotary tillage is characterized in that a cultivation technology combining vertical deep rotary tillage and full-ground coverage ridging micro-furrows is adopted, so that base fertilizer can be uniformly and deeply applied to soil, and the full absorption and utilization of crops are facilitated; and the plough bottom layer is broken, so that the soil is loosened, the root system is favorably pricked, and the yield of potato tubers is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the vertical deep rotary tillage cultivation method for potatoes in semiarid regions comprises the following steps:
1) land selection and pretreatment: selecting a plot with loose soil texture, good permeability, flat terrain, 3-5% of sand content and 10-15% of organic matter content as a planting field, and timely cleaning stubble after harvesting previous crops to ensure that the surface of the cultivated land is clean and has no impurities;
2) applying a base fertilizer: uniformly spreading urea 10 kg/mu, diammonium phosphate 15 kg/mu, potassium sulfate 3 kg/mu and an organic fertilizer on the ground surface, wherein the organic fertilizer is prepared by mixing the organic fertilizer with plant ash and coal ash according to the mass ratio of 20:3:1, piling, sealing for 15-20 days, spreading, airing for 1-2 days, and spreading on the ground surface with the dosage of 1000 plus 2000 kg/mu;
3) vertical deep rotation and ridging: after the base fertilizer is applied, the soil is vertically deeply screwed for 35-40cm, the soil is required to be transversely broken, the longitudinal structure is not changed, and the vertical undisturbed distribution of the soil layer is kept; then, large ridges with the width of 60cm and the height of 20cm are made, large furrows with the width of 40cm are reserved among the ridges, and small furrows with the width of 20cm and the depth of 10cm are opened in the front surfaces of the large ridges;
4) coating auxiliary materials and coating films: covering the ridge surface and the furrow surface with corncob powder and wheat husks, then covering the ridge surface and the furrow surface with a black film with the thickness of more than 0.01mm on the whole ground, and placing the film joints in the big furrows without gaps between the films; when the mulching is carried out, soil is pressed on the mulching film to ensure that the mulching film is tightly attached to ridge surfaces and furrows, the mulching films on two sides are straightened and compacted, and a soil waistband is manually pressed transversely every 2-3 m;
5) seed selection and seed treatment: selecting a potato virus-free fine seed with compact plant type, regular potato shape, strong stress resistance, good commodity, high yield and excellent quality, uniformly spraying the surface of the seed potato one day before sowing according to the proportion that 100kg of seeds are mixed with 5g of 40% agricultural streptomycin sulfate soluble powder and 10kg of water, cutting the seed potato into potato blocks with the weight of 30-50g and 1-2 eyes after killing bacteria on seed coats;
6) sowing: planting potatoes at the top of a large ridge at a distance of 10-15cm from a ditch when the temperature is above 5-7 ℃ and the ground temperature of 10cm reaches 7-8 ℃ in the middle and late ten days of 4 months to the beginning of 5 months, placing 1-2 potato blocks in each hole with a sowing depth of 3-5cm, covering soil in the sowing holes, and treading with uniform force by feet to make the potato blocks closely contact with the soil, so as to prevent the sowing holes from scattering a large amount of soil moisture and hardening when meeting rain from affecting seedling emergence;
7) managing the field;
8) pest control;
9) harvesting in due time;
10) and removing the waste film.
The mixing mass ratio of the corncob powder to the wheat husks is 3:1, and the crushed particle size of the corncobs is 1-1.5 cm.
Compared with the prior art, the invention has the beneficial effects that:
1) the invention combines the vertical deep rotary tillage planting technology with the full-film mulching and ridging micro-furrow planting technology, makes up the defect of poor soil moisture preservation effect of the deep rotary tillage planting common planting technology, and also solves the problems that the base fertilizer and the soil are not uniformly mixed, the fertilization position is shallow and the crops cannot be fully absorbed and utilized in the plowing full-film mulching and ridging micro-furrow planting technology;
2) when the organic fertilizer is applied, the organic fertilizer, the plant ash and the coal ash are mixed and subjected to stacking and sealing treatment, the plant ash can not only improve the potassium content, but also improve the pH value of the fertilizer, and has the effect of killing germs in the organic fertilizer, more importantly, the mixed organic fertilizer has better heat preservation and permeation effects, and can meet the requirements of the growth temperature and the permeation degree of the potatoes;
3) after the organic fertilizer is deeply applied, corncobs and wheat husks are adopted to cover the ground on ridge surfaces and furrow surfaces, and then black films are covered, which is equivalent to the binary covering of film straws, so that the organic fertilizer can store water and preserve heat, can gradually ferment and supply soil nutrition, can improve the soil permeability, and ensures the growth and development of potatoes;
4) the method can improve the quality and the yield of the potatoes, improve the production efficiency and the economic benefit, and is suitable for large-scale cultivation and transplantation. Tests show that the yield of the potatoes planted by the method is improved by 12.7 percent on a par, and particularly the commodity rate is improved to 75.3 percent.
Detailed Description
The technical solutions of the present invention are further described below with reference to specific examples to facilitate understanding for those skilled in the art.
Example 1
In order to illustrate and verify the technical scheme and the practical effect of the invention, the applicant performs a field test in the Mingxi of Gansu in 2015, the local annual rainfall is 300-: the vertical deep rotary tillage cultivation method for potatoes in semiarid regions comprises the following steps:
1) land selection and pretreatment
Selecting 10 mu land with loose soil texture, good permeability, flat terrain, 3-5% of sand content and 10-15% of organic matter content as planting land, and timely cleaning stubble after harvesting previous crops to ensure that the surface of the land is clean and has no impurities;
2) applying a base fertilizer: uniformly spreading urea 10 kg/mu, diammonium phosphate 15 kg/mu, potassium sulfate 3 kg/mu and an organic fertilizer on the ground surface, wherein the organic fertilizer is prepared by mixing the organic fertilizer with plant ash and coal ash according to the mass ratio of 20:3:1, piling, sealing for 15-20 days, spreading, airing for 1-2 days, and spreading on the ground surface with the dosage of 1000 plus 2000 kg/mu;
3) vertical deep rotation and ridging: after the base fertilizer is applied, the soil is vertically deeply screwed for 35-40cm, the soil is required to be transversely broken, the longitudinal structure is not changed, and the vertical undisturbed distribution of the soil layer is kept; then, large ridges with the width of 60cm and the height of 20cm are made, large furrows with the width of 40cm are reserved among the ridges, and small furrows with the width of 20cm and the depth of 10cm are opened in the front surfaces of the large ridges;
4) coating auxiliary materials and coating films: covering the ridge surface and the furrow surface with corncob powder and wheat husks, then covering the ridge surface and the furrow surface with a black film with the thickness of more than 0.01mm on the whole ground, and placing the film joints in the big furrows without gaps between the films; when the mulching is carried out, soil is pressed on the mulching film to ensure that the mulching film is tightly attached to ridge surfaces and furrows, the mulching films on two sides are straightened and compacted, and a soil waistband is manually pressed transversely every 2-3 m;
5) seed selection and seed treatment: selecting a potato virus-free fine seed with compact plant type, regular potato shape, strong stress resistance, good commodity, high yield and excellent quality, uniformly spraying the surface of the seed potato one day before sowing according to the proportion that 100kg of seeds are mixed with 5g of 40% agricultural streptomycin sulfate soluble powder and 10kg of water, cutting the seed potato into potato blocks with the weight of 30-50g and 1-2 eyes after killing bacteria on seed coats;
6) sowing: planting potatoes at the top of a large ridge at a distance of 10-15cm from a ditch when the temperature is above 5-7 ℃ and the ground temperature of 10cm reaches 7-8 ℃ in the middle and late ten days of 4 months to the beginning of 5 months, placing 1-2 potato blocks in each hole with a sowing depth of 3-5cm, covering soil in the sowing holes, and treading with uniform force by feet to make the potato blocks closely contact with the soil, so as to prevent the sowing holes from scattering a large amount of soil moisture and hardening when meeting rain from affecting seedling emergence;
7) management of field
Seedling stage management: hardening is formed on the sowing holes in the strong rainfall weather after sowing, and the hardening needs to be broken in time; if the new seedlings are dislocated with the sowing holes, the seedlings should be put in time, and the plots with over two meters of seedlings are replanted in time;
secondly, bud period management: timely picking flowers and topping, topdressing the leaves at the right time, topdressing 5-8kg of urea and 5kg of diammonium phosphate per mu; the potato is sensitive to microelements such as boron, zinc and the like, 0.5 percent of monopotassium phosphate and 0.1 to 0.3 percent of borax or zinc sulfate aqueous solution are sprayed on the leaf surface of each mu in flowering and potato-bearing periods, 1 time is sprayed every 7 days for 2 to 3 times, and 50 to 70kg is sprayed on each mu;
managing the expansion period of tubers: covering a proper amount of soil on the mulching film, reducing the temperature in the ridges, creating a cold soil environment to facilitate tuber expansion and performing root topdressing on the land blocks subjected to fertilizer removal; little or no additional manuring is performed during drought, and the additional manuring amount is properly increased when the rainwater is sufficient and the moisture content is good;
8) pest control
Common diseases of the potatoes include late blight, ring rot, scab, virus disease and the like, and the diseases are mainly controlled by agriculture, and the specific control method comprises the following steps:
preventing and treating late blight: in the years of excessive rainwater, the potato is easy to have late blight before and after the flowering phase, and the diseased plant can be sprayed with 58% metalaxyl manganese zinc wettable powder 600 times liquid, 25% tridyme emulsifiable solution 3000 times liquid, 60% Baitai dispersible granule 1500 times liquid, 70% product wetting suspending agent 800 times liquid and the like;
② prevention and control of ring rot: before sowing, a cutter is soaked and sterilized by 53.7 percent of 400 times of liquid which can be killed to obtain 2000 dry suspending agent, blocks are soaked for 30 minutes by 47 percent of Carillin powder 500 times of liquid or neomycin 5000 times of liquid, and 50 percent of DT wettable powder 500 times of liquid or 25 percent of cuaminosulfate aqueous solution 300 times of liquid is sprayed when disease occurs;
preventing and treating the scab: spraying 2000 times of 72% intestinal agricultural streptomycin or 1000 times of 65% mancozeb wettable powder for 2-3 times at the early stage of morbidity, and spraying for 1 time every 7-10 days;
and fourthly, underground pest control: the underground insect pests of the potatoes mainly comprise white grubs, aphids and the like, the white grubs and the like are dissolved by adding 0.5kg of 90 percent crystal trichlorfon into water and sprayed on 35kg of fine soil to be scattered in the ditch; strictly controlling aphids, spraying and controlling by using 40 percent omethoate 1000-fold 2000-fold liquid or 2.5 percent deltamethrin mixed with 2500-fold water at the initial occurrence stage, and simultaneously mixing 15kg of 5 percent methyl isosalix-phos for controlling according to the occurrence condition of underground pests in combination with fertilization;
9) harvesting at the right time
When the potato blocks stop growing, namely 2/3 leaves turn yellow and plants begin to wither, harvesting in a sunny day with dry surface soil in time, cutting off stems and leaves on the overground part a week before harvesting, transporting out of the field to achieve the purposes of reducing diseases of the tubers and drying in the sun, after the tubers are dried in the sun for 3-5 hours, carrying out classified bagging, and strictly removing soil, tetanus and rotten potatoes on the potato blocks;
10) removing waste film
Harvesting is carried out after the overground part of the potatoes are dried and scattered, mulching films are manually or mechanically removed before harvesting, no residual films exist in soil, soil pollution is avoided, then the potatoes are harvested manually or mechanically, and soil is loosened deeply and raked in time after harvesting is completed.
In 2015, the applicant selects 10 mu fields with comparable conditions such as soil moisture content, soil quality and illumination for experimental planting, the management and protection methods of the experimental field and the control field are basically the same, the differences are in the farming mode, rotary tillage depth, film covering mode and the like, and the experimental results are as follows:
influence of different farming modes and depths on potato emergence rate and emergence regularity
1.1 Effect of cultivation on Potato emergence Rate and Aligning of emergence
1.1.1 observing the seedling emergence condition of the potatoes at any time, measuring the seedling emergence uniformity at 25 days after sowing, measuring the seedling emergence rate at 30 days, and measuring results are shown in a table 1.
TABLE 1 Effect of cultivation on Potato emergence Rate and Aligning of emergence
1.2 Effect of tilling depth on Potato emergence Rate and Aligning of emergence
1.2.1 the emergence of the potato seedlings is observed at any time, the emergence uniformity is measured 25 days after sowing, the emergence rate is measured 30 days, and the measurement results are shown in the following table 2.
TABLE 2 influence of tilling depth on the rate and regularity of emergence of potatoes
Second, influence of different farming modes and depths on yield and quality of potatoes
2.1 Effect of cultivation on Potato yield and quality, see Table 3 below.
TABLE 3 Effect of cultivation on Potato yield and quality
2.2 Effect of tilling depth on Potato yield and quality, see Table 4 below
TABLE 4 Effect of tilling depth on potato yield and quality
In addition, the applicant also covered corncobs and wheat husks in field trials; the organic fertilizer is subjected to mixing pretreatment, and the influence of deep application of the organic fertilizer on the yield and quality of the potatoes is verified, and the result shows that:
1) when the organic fertilizer, the plant ash and the coal ash are mixed according to the mass ratio of 20:3:1, stacked, sealed and treated for 15-20 days, spread and dried for 1-2 days and then applied to the ground surface, the yield of the potatoes is increased by 4.5 percent in the same ratio, and the commodity rate is improved by 1.8 percent;
2) when the corncobs and the wheat husks are adopted for covering, the yield of the potatoes is increased by 3.1 percent in a same ratio, and the commodity rate is increased by 0.3 percent;
3) when the organic fertilizer is deeply applied, the yield of the potatoes is increased by 7.0 percent on the same scale, and the commodity rate is improved by 10.3 percent.
Claims (2)
1. The vertical deep rotary tillage cultivation method for potatoes in semiarid regions is characterized by comprising the following steps of: the method comprises the following steps:
1) land selection and pretreatment: selecting a plot with loose soil texture, good permeability, flat terrain, 3-5% of sand content and 10-15% of organic matter content as a planting field, and timely cleaning stubble after harvesting previous crops to ensure that the surface of the cultivated land is clean and has no impurities;
2) applying a base fertilizer: uniformly spreading urea 10 kg/mu, diammonium phosphate 15 kg/mu, potassium sulfate 3 kg/mu and an organic fertilizer on the ground surface, wherein the organic fertilizer is prepared by mixing the organic fertilizer, plant ash and coal ash according to the mass ratio of 20:3:1, piling, sealing for 15-20 days, spreading, airing for 1-2 days, and spreading on the ground surface with the dosage of 1000 plus 2000 kg/mu;
3) vertical deep rotation and ridging: after the base fertilizer is applied, the soil is vertically deeply screwed for 35-40cm, the soil is required to be transversely broken, the longitudinal structure is not changed, and the vertical undisturbed distribution of the soil layer is kept; then, large ridges with the width of 60cm and the height of 20cm are made, large furrows with the width of 40cm are reserved among the ridges, and small furrows with the width of 20cm and the depth of 10cm are opened in the front surfaces of the large ridges;
4) coating auxiliary materials and coating films: covering the ridge surface and the furrow surface with corncob powder and wheat husks, then covering the ridge surface and the furrow surface with a black film with the thickness of more than 0.01mm on the whole ground, and placing the film joints in the big furrows without gaps between the films; when the mulching is carried out, soil is pressed on the mulching film to ensure that the mulching film is tightly attached to ridge surfaces and furrows, the mulching films on two sides are straightened and compacted, and a soil waistband is manually pressed transversely every 2-3 m;
5) seed selection and seed treatment: selecting a potato virus-free fine seed with compact plant type, regular potato shape, strong stress resistance, good commodity, high yield and excellent quality, uniformly spraying the surface of the seed potato one day before sowing according to the proportion that 100kg of seeds are mixed with 5g of 40% agricultural streptomycin sulfate soluble powder and 10kg of water, cutting the seed potato into potato blocks with the weight of 30-50g and 1-2 eyes after killing bacteria on seed coats;
6) sowing: planting potatoes at the top of a large ridge at a distance of 10-15cm from a ditch when the temperature is above 5-7 ℃ and the ground temperature of 10cm reaches 7-8 ℃ in the middle and late ten days of 4 months to the beginning of 5 months, placing 1-2 potato blocks in each hole with a sowing depth of 3-5cm, covering soil in the sowing holes, and treading with uniform force by feet to make the potato blocks closely contact with the soil, so as to prevent the sowing holes from scattering a large amount of soil moisture and hardening when meeting rain from affecting seedling emergence;
7) managing the field;
8) pest control;
9) harvesting in due time;
10) and removing the waste film.
2. The vertical deep rotary tillage cultivation method for potatoes in semiarid regions as claimed in claim 1, wherein: the mixing mass ratio of the corncob powder to the wheat husks is 3:1, and the crushed particle size of the corncobs is 1-1.5 cm.
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| CN110583136A (en) * | 2019-10-22 | 2019-12-20 | 四川农业大学 | Sponge soil improvement method |
| CN113030433B (en) * | 2021-02-26 | 2023-06-20 | 甘肃省农业科学院土壤肥料与节水农业研究所 | Method for quickly determining whether soil needs deep scarification |
| CN114467649A (en) * | 2022-03-31 | 2022-05-13 | 甘肃农业大学 | Method for improving yield of edible sunflower by using broken wheat straw cushion film coverage |
| CN115413544A (en) * | 2022-08-19 | 2022-12-02 | 甘肃省农业科学院旱地农业研究所 | Water-fertilizer efficient cultivation method for codonopsis pilosula in dry land |
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| CN107371730A (en) * | 2017-08-22 | 2017-11-24 | 贵州农无忧农业科技有限公司 | A kind of growing nursery and culture method of potato |
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