CN102246646A - Cultivation method of leaf vegetable with low nitrate content - Google Patents
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Abstract
The invention discloses a cultivation method of leaf vegetable with low nitrate content. The method comprises the following steps: A, land preparation: turning over the soil, ditching and ridging; B, fertilization: applying chemical nitrogenous fertilizer potassium, wherein 100 kg of N, 50 kg of P and 50 kg of K are applied to each hectare; C, seeding: seeding the sprouted vegetable seeds into the fertilized soil after the land preparation; D, watering: watering and covering the soil with a thin film or sunshade net after the seeding; E, spraying plant physiological regulator: spraying the prepared plant physiological regulator in the growth period of vegetable, once every week and three in total; F, prevention and control of disease, pest and grass: spraying liquid medicine for preventing disease and killing pest, and weeding in the vegetable plot; and G, harvesting: harvesting the ripe crops. The method is easy to implement and convenient to operate, and has low cost; the plant physiological regulator has good effect and is convenient to use and widely applicable; and moreover, the method is widely applicable to the planting of leaf vegetable in the same type of vegetable plot soil, reduces nitrate content of leaf vegetable, improves the vegetable quality and the soil quality, and prevents widespread pollution caused by excessive soil nutrient.
Description
Technical field
The present invention relates to leafy vegetable nitrate and fertilizer validity technical field, more specifically relate to the cultivation method of leaf vegetableses such as a kind of protonitrate content a variety of Chinese cabbage, naked oats dish, radish cabbage and water spinach, to reduce the nitrate content of leafy vegetables, improve quality of vegetable and control widespread pollution from the overuse of fertilizers and pesticides in rural area.
Background technology
Vegetables are important foodstuffs that it is essential that people live, but nitrate and cause polluting in the easy enrichment soil of vegetables.Have and studies show that the nitrate of absorption of human body has 85% to come from vegetables, often the high vegetables of edible nitre phosphate content have very big influence to health, nitrate salts content of vegetable has caused people's extensive concern, is used as one of important indicator of vegetables quality safety.Long-term a large amount of use the along with the vegetable field chemical nitrogen fertilizer, not only make continuous the increasing of nitrate content in the soil and cause environmental risk, and the nitrate content of vegetables also improves constantly, and it is more outstanding particularly to distinguish vegetable field nitrogen phosphorus environmental risk and the nitrate salts content of vegetable phenomenon that exceeds standard on the outskirts of a town.Therefore, reduce the research focus that the chemical fertilizer input has become agriculture environmental protection and vegetables quality safety.Pan Jie etc. studies show that, use nitrification inhibitor under the potted plant and field condition and can make nitrate content in Chinese cabbage reduce by 20% and 40% respectively, and output increases by 47% and 8%, and field condition sprays trace element also can reduce nitrate content in Chinese cabbage.Result of the tests such as Ge Caixia show, spray the nitrate content that trace elements such as manganese, molybdenum, zinc can significantly reduce a variety of Chinese cabbage, three-coloured amaranth, summer radish and asparagus lettuce, and its output can increase by 5%～10%.Also there are some researches show, adopt nitrate in some amino acid replacement water planting liquid, can reduce the nitrate content of water planting Chinese cabbage and romaine lettuce and onion.Yellow east wind etc. studies show that application of organic fertilizers can reduce the nitrate content of a variety of Chinese cabbage, mainly is because fertilizer contains than polyphenol, sugar, aldehyde compound and carboxyl, and adsorbable and fixing ammonium nitrogen suppresses its nitrification.But it is less about plant physiological regulator and microelements aminophenol chelated both at home and abroad to the research of nitrate salts content of vegetable.Therefore inquire into and reduce chemical fertilizer application, reduction nitrate salts content of vegetable, significant for raising quality of vegetable and control widespread pollution from the overuse of fertilizers and pesticides in rural area.
Summary of the invention
The objective of the invention is to be to provide a kind of cultivation method of protonitrate content leaf vegetables, easy to implement the method, easy and simple to handle, cost is low, adopt plant physiological regulator, this conditioning agent is effective, easy to use, practicality is wide, is widely used in the plantation of leafy vegetable in the dissimilar vegetable field soils, reduces the leaf vegetables nitrate content, improve quality of vegetable, and can reduce chemical fertilizer application, and improve soil quality, prevent the pollution of area source that the soil nutrient surplus causes.
In order to realize above-mentioned purpose, the present invention adopts following technical measures:
A kind of cultivation method of protonitrate leaf vegetables, its technical conceive is: outlying area is the production base of city agricultural product, it is again the district that dissolves of urban life and industrial discharge, also undertake the The Surroundings in Cities security function simultaneously, in the bright agricultural product supply of China's agricultural production and city, bringing into play irreplaceable effect.Suburban agriculture district as having the distinct characteristic of China had both had self unique geography and economic development advantage, also was faced with a series of outstanding problems.Chemical fertilizer has important effect for improving crop yield.Along with the continuing to increase and the demand of grain is constantly risen of world population, the consumption of chemical fertilizer is increasing year by year, and the yield increasing effect of unit fertilizer is also in obvious decline simultaneously.This phenomenon is particularly evident in China, and lavishment for a long time and the excessive chemical fertilizer of using cause crops more and more serious to the dependence of chemical fertilizer.And crop is very low for the absorption rate of soil nitrogen phosphorus, not only causes the low and farmland quality decline of utilization rate of fertilizer, more seriously causes widespread pollution from the overuse of fertilizers and pesticides in rural area and agricultural product quality and safety hidden danger, and it is healthy to influence the town and country people.Therefore, how to reduce the farmland fertilizer amount, improve soil nutrient the crop utilization rate, to keep high crop yield be the important problem in science that needs to be resolved hurrily at present.The key technical problem that patent of the present invention need solve is to reduce applying quantity of chemical fertilizer, joins simultaneously and executes plant physiological regulator, and described plant physiological regulator comprises growth hormone, gibberellin, microelements aminophenol chelated and general conditioning agent.Reduce the Nitrate Accumulation of vegetables to reach in the maintenance yield of vegetables, and protect agroecological environment effectively.
A kind of cultivation method of protonitrate content leaf vegetables, this method may further comprise the steps:
(1) wholely: adopt small-sized Cultivator or manually vegetable field soil is turned over and flatten, trench digging, ridging, furrow width 25-30 centimetre, ditch depth 15-18 centimetre, row spacing 120-150 centimetre, ridge length are determined according to the field piece.
(2) fertilising: apply the farmyard manure that becomes thoroughly decomposed, perhaps execute farmyard manure+urea, superphosphate, potassium sulfate fertilizer, perhaps execute farmyard manure+nitrogen-phosphorus-potassium compound fertilizer, perhaps execute nitrogen-phosphorus-potassium compound fertilizer.Fertilizing amount requires to reach nitrogen (N) 90-110 kilogram/hectare, phosphorus (P) 45-55 kilogram/hectare, potassium (K) 45-55 kilogram/hectare.During fertilising, fertilizer imposed on whole good vegetable plot after, manually fertilizer is sneaked into evenly again that the 1-2 centimeters gets final product in the soil.
(3) sowing: hard owing to the kind skin depth of leaf vegetables such as a variety of Chinese cabbage (Brassica chinensis L.), naked oats dish (Cichaorium endivia), radish cabbage (Raphanus sativus L.) and water spinach seeds such as (Ipomoea aquatica), seed sprouting is slower when directly being seeded in the vegetable plot, if seed is perishable when directly after planting running into the low temperature overcast and rainy day weather of long period, have a strong impact on seed germination rate.Therefore should carry out presprouting of seeds prior to seeding handles.Concrete seed accelerating germination method is: before the sowing seed water is cleaned 2-3 time, seed is soaked in water 2-4 hour again, drain the water, seed is placed dish, lid wet gauze, it is under 24-26 ℃, dark condition vernalization 22-26 hour that the dish that seed is housed is placed temperature, can be used for sowing when the seed of 60%-80% shows money or valuables one carries unintentionally.
Seedtime is determined according to planting site weather, leaf vegetables kind and planting patterns, suitable sowing autumn and winter of a variety of Chinese cabbage, naked oats dish and radish cabbage, the sowing in summer of water spinach Yichuan.Seeding quantity is 1.5-2.5 kilogram/mu, and the seed after the vernalization evenly is seeded in whole good vegetable plot.
(4) water: after planting should water immediately, make that seed and soil are close to be combined, help fertilizer simultaneously and in soil, spread.After planting should carry out thermal insulation wetting when early spring or winter temperature are low, help the seed sprouting growth ridge loam cake plastic film 5-7 days; Summer and autumn after planting should be covered the sunshade net 4-6 days during high temperature and drought, and the water conservation of lowering the temperature helps the seed sprouting growth equally.
(5) spray conditioning agent: after planting 8-10 days, when the dish seedling grows to 2-3 centimetre, beginning sprays leaf vegetables conditioning agent solution for the first time: growth hormone 1 mg/litre+gibberellin 0.3 mg/litre, perhaps growth hormone 0.5 mg/litre+gibberellin 0.15 mg/litre, perhaps amino-acid chelate 0.4 grams per liter, perhaps general conditioning agent 2 grams per liters.Till the amount that sprays conditioning agent solution occurs under the drips of solution with the blade face.After this, sprayed conditioning agent 1 time, gather in the crops up to vegetables every 5-7 days.Be noted that and select fine morning dish leaf dew to spray conditioning agent after doing, help dish leaf uptake modulator.
(6) sick Chinese caterpillar fungus control: a situation arises according to the damage by disease and insect of vegetables, sprays desinsection (2500-3000 times of dilution of 2.5% (weight ratio) decis) or sterilization (500-700 times of dilution of 75% (weight ratio) tpn wetting powder, the two clever wetting powder 600-1000 times dilutions of 25% (weight ratio) first) soup 2-4 time.Remove the vegetable plot weeds.
(7) results: gather in the crops when vegetables are ripe.
Described conditioning agent is a kind of agricultural chemicals type, same insecticide, and bactericide is the same, all is a kind of classification of agricultural chemicals.Regulate the hormonal substance of growth and other functions in the plant.Mainly be divided three classes: plant auxins, cytokinin and gibberellin class.The origin of conditioning agent and classification: the division of plant cell, growth, differentiation, the aging of leaf, come off, the physiology courses such as dormancy of seed or bud all are subjected to the control of hormone.Hormone is the compound that extensively exists in the plant corpus, though its content has only a few millionths, acts on but very huge.After the chemical constitution of having known hormone, synthesize compound more, that effectiveness is stronger with the manual method simulation, their promote or suppress growth and development of plant, much extensive uses in agricultural production are arranged.The compound of this synthetic is called plant growth regulator.Plant growth regulator is an agricultural chemicals, and it is the class organic compound with natural plant hormonal activity of synthetic.Found to have regulating plant growth and grown functional mass growth hormone, gibberellin, ethene, the basic element of cell division, abscisic acid, study on brassinolide etc. have been arranged.Wherein, study on brassinolide is again state-of-the art in the world promotion high-yield plant in a present age endogenous hormones efficiently, also is a kind of new plant growth regulator that the current China development highly efficient farming to provide greater and better yields and the ecological agriculture have vigor and vitality most.
The present invention has the following advantages:
1. use plant physiological regulator of the present invention remarkable, lower nitrate content that chemical fertilizer application sprays plant physiological regulator and will significantly be lower than and use conventional chemical NPK fertilizer, and output is basic identical the effect of nitrate salts content of vegetable.
2. the cultivation method of protonitrate leafy vegetable of the present invention is high-quality for producing, and low pollution vegetables provide an economic and practical effective way, can solve because the vegetable nitrate that excessive fertilization brings pollutes and the soil nitrogen phosphorus pollution of area source.
3. the cultivation method of protonitrate leafy vegetable of the present invention has reduced the amount of application of chemical fertilizer, not only can be to produce high quality agricultural products and provide safeguard, and the agriculture pattern model of optimization is provided for environmental protection agricultural and low-carbon economy simultaneously.
4. practicality is wide, is applicable in the high yield protonitrate cultivation of various leafy vegetables in the vegetable field soil of outskirts of a town to use.Above plant physiological regulator has no side effect to humans and animals, helps the protection of ecological environment of soil; Use conditioning agent of the present invention can make nitrate salts content of vegetable significantly be lower than the processing that routine is used chemical fertilizer, it is basic identical that while yield of vegetables and routine are used chemical fertilizer.
Description of drawings
Fig. 1 is a kind of flow chart of cultivation method of protonitrate leafy vegetable
Fig. 2 is the influence of a kind of (4 kinds) the nitrate content of leafy vegetables.
A: a variety of Chinese cabbage, b: naked oats dish, c: radish cabbage, d: water spinach, identical letter representation soil of the same race are respectively handled difference not remarkable (p＜0.05)
Fig. 3 is the influence of a kind of (4 kinds) leafy vegetable output.
A: a variety of Chinese cabbage, b: naked oats dish, c: radish cabbage, d: water spinach, identical letter representation soil of the same race are respectively handled difference not remarkable (p＜0.05)
Fig. 4 is the influence of a kind of (4 kinds) vegetables results back Soil Nitrate content.
A: a variety of Chinese cabbage, b: naked oats dish, c: radish cabbage, d: water spinach, identical letter representation soil of the same race are respectively handled difference not remarkable (p＜0.05)
Embodiment
A kind of cultivation method of protonitrate content leaf vegetables, this method may further comprise the steps:
(1) whole ground 1: adopt small-sized Cultivator or manually vegetable field soil is turned over and flatten, trench digging, ridging, furrow width 25-30 centimetre, ditch depth 15-18 centimetre, row spacing 120-150 centimetre, ridge length are determined according to the field piece.
(2) fertilising 2: apply the farmyard manure that becomes thoroughly decomposed, perhaps execute farmyard manure+urea, superphosphate, potassium sulfate fertilizer, perhaps execute farmyard manure+nitrogen-phosphorus-potassium compound fertilizer, perhaps execute nitrogen-phosphorus-potassium compound fertilizer.Fertilizing amount requires to reach nitrogen (N) 90-110 kilogram/hectare, phosphorus (P) 45-55 kilogram/hectare, potassium (K) 45-55 kilogram/hectare.During fertilising, fertilizer imposed on whole good vegetable plot after, manually fertilizer is sneaked into evenly again that the 1-2 centimeters gets final product in the soil.
(3) sowing 3: hard owing to the kind skin depth of leaf vegetables such as a variety of Chinese cabbage (Brassica chinensis L.), naked oats dish (Cichaorium endivia), radish cabbage (Raphanus sativus L.) and water spinach seeds such as (Ipomoea aquatica), seed sprouting is slower when directly being seeded in the vegetable plot, if seed is perishable when directly after planting running into the low temperature overcast and rainy day weather of long period, have a strong impact on seed germination rate.Therefore should carry out presprouting of seeds prior to seeding handles.Concrete seed accelerating germination method is: before the sowing seed water is cleaned 2-3 time, seed is soaked in water 2-4 hour again, drain the water, seed is placed dish, lid wet gauze, it is under 24-26 ℃, dark condition vernalization 22-26 hour that the dish that seed is housed is placed temperature, can be used for sowing when the seed of 60%-80% shows money or valuables one carries unintentionally.
Seedtime is determined according to planting site weather, leaf vegetables kind and planting patterns, suitable sowing autumn and winter of a variety of Chinese cabbage, naked oats dish and radish cabbage, the sowing in summer of water spinach Yichuan.Seeding quantity is 1.5-2.5 kilogram/mu, and the seed after the vernalization evenly is seeded in whole good vegetable plot.
(4) water 4: after planting should water immediately, make that seed and soil are close to be combined, help fertilizer simultaneously and in soil, spread.After planting should be incubated (18-23 ℃) humidification when early spring or winter temperature lower (16-20 ℃), help the seed sprouting growth ridge loam cake plastic film 5-7 days; After planting should cover the sunshade net 4-6 days when summer and high temperature in autumn (30-35 ℃) arid, (28-32 ℃) water conservation of lowering the temperature helps the seed sprouting growth equally.
(5) spray conditioning agent 5: after planting 8-10 days, when the dish seedling grows to 2-3 centimetre, beginning sprays leaf vegetables conditioning agent solution for the first time: growth hormone 1 mg/litre+gibberellin 0.3 mg/litre, perhaps growth hormone 0.5 mg/litre+gibberellin 0.15 mg/litre, perhaps amino-acid chelate 0.4 grams per liter, perhaps general conditioning agent 2 grams per liters.Till the amount that sprays conditioning agent solution occurs under the drips of solution with the blade face.After this, sprayed conditioning agent 1 time, gather in the crops up to vegetables every 5-7 days.Be noted that and select fine morning dish leaf dew to spray conditioning agent after doing, help dish leaf uptake modulator.
(6) control of sick Chinese caterpillar fungus 6: a situation arises according to the damage by disease and insect of vegetables, sprays desinsection (2500-3000 times of dilution of 2.5% (weight ratio) decis) or sterilization (500-700 times of dilution of 75% (weight ratio) tpn wetting powder, the two clever wetting powder 600-1000 times dilutions of 25% (weight ratio) first) soup 2-4 time.Remove the vegetable plot weeds.
(7) results 7: gather in the crops when vegetables are ripe.
Below be to spray plant physiological regulator under the relevant condition of pot leaf vegetables nitrate content impact effect is tested:
(1) soil collection and processing: gather each 500 kilograms of outskirts of a town vegetable field soils (0-20 centimetre), remove thick root, stone and plant and animal residues, soil sample is shakeout, place the air ventilation place, allow its natural air drying.Be adjusted to 45% o'clock of saturated soil water content, cross 5 millimeters aperture sieve, thoroughly mixing is used for pot experiment.Every basin dress is equivalent to the fresh soil of 4 kilograms of oven-dried weights.
(2) fertilizer: n p k fertilizer adopts respectively analyzes pure urea, superphosphate (P
2O
5Be 14%) and potassium sulphate (K
2O content is 50%), fertilizer must become thoroughly decomposed pig manure.
(3) test is handled: pot experiment setting, 1. contrast (CK): do not apply fertilizer; 2. conventional fertilizer application amount (NPK): make base manure with analyzing pure urea, superphosphate and potassium sulphate respectively, consumption is equivalent to N200, P100, K100 kilogram/hectare; 3. 50%NPK+ high concentration growth element-gibberellin (IAA-GA) sprays: N100, P50, K50 kilogram/hectare, and growth hormone (IAA) and gibberellin (GA) solution concentration are respectively 1 mg/litre and 0.3 mg/litre; 4. 50%NPK+ low concentration IAA-GA sprays: N100, P50, K50 kilogram/hectare, and growth hormone (IAA) and gibberellin (GA) solution concentration are respectively 0.5 mg/litre and 0.15 mg/litre; 5. the 50%NPK+ amino-acid chelate sprays: N100, P50, K50 kilogram/hectare, amino-acid chelate are 2500 times of distilled water diluting liquid (0.4 grams per liters); 6. 30%NPK+70% fertilizer+general conditioning agent sprays: N67, P33, K33 kilogram/hectare, and fertilizer (for the pig manure that becomes thoroughly decomposed, making base manure) amount of application is 2000 kilograms/hectare, general modifier concentration is 2 grams per liters (500 times of distilled water diluting liquid); 7. the general conditioning agent of 50%NPK+ sprays: N100, P50, K50 kilogram/hectare, general modifier concentration are 2 grams per liters (500 times of distilled water diluting liquid).Each is handled 4 times and repeats.Concrete processing mode sees Table 1:
Table 1 pot experiment is handled
(4) pot experiment operating procedure:
With above-mentioned steps 1 soil behind the mixing plastic basin of packing into of sieving, bore is that 27 centimetres, height are 17 centimetres black back cover plastic basin, it is 4.00 kilograms of soil that every basin dress is equivalent to oven-dried weight, handle the fertilizing amount fertilising by each again, with fertilizer and soil mixing, place indoor its balance 2 days that make, move to a variety of Chinese cabbage, naked oats dish, radish cabbage and the water spinach sowed in the plastic tunnel through vernalization then.Concrete seed accelerating germination method is: before the sowing seed water is cleaned 2-3 time, seed is soaked in water 2-4 hour again, drain the water, seed is placed dish, lid wet gauze, it is under 24-26 ℃, dark condition vernalization 22-26 hour that the dish that seed is housed is placed temperature, can be used for sowing when the seed of 60%-80% shows money or valuables one carries unintentionally.The every basin in back of emerging keeps 13,10,20,13 strains respectively, and the vegetable growth phase sprays plant physiological regulator altogether 3 times.During results, a variety of Chinese cabbage, naked oats dish, radish cabbage and the water spinach acrial part of each processing are cleaned with running water, behind the distilled water flushing, dried surface moisture, weigh, get part plant sample and be used to measure nitrate content.Simultaneously that earth mixture in the basin is even, get 150～200 gram soil samples, regulate soil moisture content to 45% of saturation moisture capacity (WHC), place 25 ℃ of culturing room to cultivate again 7 days, get and be equivalent to the heavy fresh soil sample of 8g oven-dried soil and add 40 milliliter of 2 mol KCl solution (Tu Shui was than 1: 5, weight per volume) the vibration lixiviate is 1 hour, filters, and nitrate nitrogen adopts flow injection instruments to measure in the filtrate.
Described plant modifying agent has following four kinds: A, growth hormone 1 mg/litre+gibberellin 0.3 mg/litre; B, growth hormone 0.5 mg/litre+gibberellin 0.15 mg/litre; C, microelements aminophenol chelated 0.4 grams per liter (2500 times of distilled water diluting liquid); D, general conditioning agent 2 grams per liters (500 times of distilled water diluting liquid), available any plant modifying agent all sprays the blade face tow sides in the phase till the dropping liquid of blade face at vegetable growth.
Claims (1)
1. the cultivation method of a protonitrate content leafy vegetable the steps include:
(A) wholely: adopt small-sized Cultivator or manually vegetable field soil is turned over and flatten, trench digging, ridging, 30 centimetres of furrow width 25 –, 18 centimetres of ditch depth 15 –, 150 centimetres of row spacing 120 –, ridge length are determined according to the field piece;
(B) fertilising: apply the farmyard manure that becomes thoroughly decomposed, perhaps execute farmyard manure+urea, superphosphate, potassium sulfate fertilizer, perhaps execute farmyard manure+nitrogen-phosphorus-potassium compound fertilizer, perhaps execute nitrogen-phosphorus-potassium compound fertilizer, fertilizing amount requires to reach 55 kilograms/hectare of 110 kilograms/hectare of nitrogen 90 –, 55 kilograms/hectare of phosphorus 45 –, potassium 45 –, during fertilising, fertilizer imposed on whole good vegetable plot after, manually fertilizer is evenly sneaked in the soil 2 centimetres of 1 – again;
(C) sowing: before the sowing leaf vegetables presprouting of seeds is handled, concrete seed accelerating germination method is: before the sowing seed water is cleaned 2 – 3 times, 2 – 4 hours again are soaked in water seed, drain the water, seed is placed dish, lid wet gauze, it is vernalization 22 – 26 hours under 26 ° of C of 24 –, the dark condition that the dish that seed is housed is placed temperature, is used for sowing when the seed of 60% – 80% shows money or valuables one carries unintentionally;
Seedtime is determined according to planting site weather, leaf vegetables kind and planting patterns, a variety of Chinese cabbage, naked oats dish and radish cabbage sowing autumn and winter, and water spinach sowing spring and summer, seeding quantity is 2.5 kilograms/mu of 1.5 –, and the seed after the vernalization evenly is seeded in whole good vegetable plot;
(D) water: after planting should water immediately, make that seed and soil are close to be combined, help fertilizer simultaneously and in soil, spread, when early spring or 20 ° of C of winter temperature 16 – after planting ridge loam cake plastic film 5 – 7 days, be incubated 23 ° of C humidifications of 18 –, help the seed sprouting growth; Summer and autumn high temperature 30 – after planting should cover sunshade net 4 – 6 days during 35 ° of C arids, and the 32 ° of C water conservations of 28 – of lowering the temperature help the seed sprouting growth equally;
(E) spray conditioning agent: after planting 8 – 10 days, when the dish seedling grows to 3 centimetres of 2 –, beginning sprays leaf vegetables conditioning agent solution for the first time: growth hormone 1 mg/litre+gibberellin 0.3 mg/litre, perhaps growth hormone 0.5 mg/litre+gibberellin 0.15 mg/litre, perhaps amino-acid chelate 0.4 grams per liter, perhaps general conditioning agent 2 grams per liters, till the amount that sprays conditioning agent solution occurs under the drips of solution with the blade face, after this, sprayed conditioning agent in 7 days 1 time every 5 –, up to the vegetables results, selection dish leaf dew in the fine morning sprays conditioning agent after doing, and helps dish leaf uptake modulator;
(F) sick Chinese caterpillar fungus control: a situation arises according to the damage by disease and insect of vegetables, spray desinsection 3000 times of dilutions of 2.5% weight ratio decis, 2500 – or 700 times of dilutions of sterilization 75% weight ratio tpn wetting powder, 500 –, two 1000 times of dilution soups of clever wetting powder 600 –, 2 – of 25% weight ratio first 4 times, remove the vegetable plot weeds;
(G) results: gather in the crops when vegetables are ripe.
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| CN103563642A (en) * | 2013-11-22 | 2014-02-12 | 湖南省农业生物资源利用研究所 | Cultivation method of eggplants with low nitrate content |
| CN103563642B (en) * | 2013-11-22 | 2014-12-03 | 湖南省农业生物资源利用研究所 | Cultivation method of eggplants with low nitrate content |
| CN104541865A (en) * | 2014-12-24 | 2015-04-29 | 苏州市农业科学院 | Cultivation method for reducing nitrate content of leaf vegetables |
| CN105359954A (en) * | 2015-11-06 | 2016-03-02 | 深圳市芭田生态工程股份有限公司 | Method for improving quality of water spinach |
| CN105284416A (en) * | 2015-12-08 | 2016-02-03 | 广西佳联达生态农业发展有限责任公司 | Planting method of small Chinese cabbages |
| CN105557266A (en) * | 2015-12-23 | 2016-05-11 | 李春燕 | Method for planting pakchoi |
| CN105766336A (en) * | 2016-03-28 | 2016-07-20 | 许五妮 | Planting method of leaf lettuce |
| CN105794465A (en) * | 2016-03-28 | 2016-07-27 | 许五妮 | Chinese cabbage planting method |
| CN105830692A (en) * | 2016-03-28 | 2016-08-10 | 许五妮 | Planting method of baby bok choy |
| CN105830691A (en) * | 2016-03-28 | 2016-08-10 | 许五妮 | Planting method of fennel |
| CN106982621A (en) * | 2017-03-09 | 2017-07-28 | 海门市峰霞农产品有限公司 | The cultural method of Chinese cabbage |
| CN107493862A (en) * | 2017-08-11 | 2017-12-22 | 合肥润雨农业科技有限公司 | A kind of Lettuce early spring outdoor implantation methods |
| CN108849292A (en) * | 2018-04-20 | 2018-11-23 | 申琳 | A kind of cultural method of high yield vegetables |
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