1 base fertilizer: the role of base fertilizer is two-fold, on the one hand, it can improve the soil and fertilize the soil; on the other hand, it can continuously supply nutrients throughout the growth period of vegetables. Therefore, the amount of base fertilizer is relatively large, accounting for more than half of the total fertilization amount. The base fertilizer is mainly organic fertilizer, and it is properly applied with chemical fertilizer. Combine deep tillage and ploughshare. The base fertilizer is better for deep application. The base fertilizer application methods are: a. Full-layer application: based on the application of the application, combined with deep cultivation, ploughing after ploughing, so that the soil and fertilizer are mixed. b. Layered application: Most of the delayed-effect fertilizers are combined with the cultivated land into the middle and lower layers of the plough layer, and a small amount of quick-acting fertilizer is combined with the sputum to be applied to the middle and upper parts of the plough layer to combine the base fertilizer with the surface fertilizer. c. Centralized application: When the amount of base fertilizer is small or the application of phosphate fertilizer which is easy to be fixed by soil, in order to make the fertilizer exert a greater effect, a concentrated application method should be adopted, that is, the fertilizer is concentratedly applied to the vicinity of the vegetable rhizosphere, so that the base fertilizer has the fertilizer at the same time. The role. Such as hole application, ditch application, etc., can reduce nutrient fixation and increase the probability of root absorption.
2 kinds of fertilizer: the role of seed fertilizer is to supplement the lack of base fertilizer, on the one hand to supply nutrients in the early growth stage of vegetable crops; on the other hand to promote seed germination, to ensure the supply of nutrients in the critical period of nutrition. The seed fertilizer is generally used with fully decomposed organic fertilizer or quick-acting fertilizer, and the application amount is small. Various quick-acting chemical fertilizers, fully decomposed organic fertilizers (such as cake fertilizer, poultry manure, etc.), biological fertilizers, and trace element fertilizers can be used for seed fertilizer application. The fertilizer efficiency of the seed fertilizer is determined by factors such as soil, fertilization techniques and cultivation management measures. Because the fertilizer and seeds are close together. Therefore, the quality and dosage of fertilizers are particularly strict, otherwise it may cause burning and burning of seedlings, resulting in lack of seedlings and ridges. The specific application methods of seed fertilizer include seed dressing, soaking and rooting. a. Seed dressing method: a certain amount of fertilizer is evenly mixed with a certain amount of seeds, and then seeded. Suitable fertilizers for seed dressing include biological fertilizers and trace element fertilizers. Fertilizers that are too acidic, over-alkali, highly hygroscopic, and contain toxic ingredients are not suitable for seed dressing. b. Soaking method: Soak the seeds with a certain concentration of fertilizer solution, then remove the seeds and dry them for seeding. If the water is diluted to a certain concentration with decomposed organic fertilizer liquid or biogas water, soaking cucumbers and kidney beans can increase the germination rate and emergence rate. c. Roots: It is often used for transplanting tomato and eggplant seedlings. The biological fertilizer, micro-fertilizer and the like are mixed with a certain proportion of organic fertilizer or loam to form a paste, and transplanting after rooting can increase the survival rate of the seedling and facilitate the growth of the seedling.
3 Top dressing: The purpose of top dressing is to supplement the nutrients needed for the growth and development of vegetable crops. Generally, quick-acting fertilizers and decomposed organic fertilizers can be used as top dressings. The amount of topdressing depends on the amount of base fertilizer, vegetable growth, soil fertility and climatic conditions. Specific application methods are: a. Shi Shi or acupoint application, deep pursuit of covering soil. When applying the volatile nitrogen fertilizer such as urea or ammonium sulfate in the vegetable garden, it should be applied 8-10 cm deep and covered with soil. Immediately after application, water should be poured to make the fertilizer and water dissolve, and smoothly move to the rhizosphere, and be absorbed by the roots in time. When phosphate fertilizers such as calcium phosphate and ammonium phosphate are used as top dressings, they should be applied to the root layer in a concentrated ditch or a hole to increase the contact area with the roots and reduce soil fixation. b. Fertilizing and fertilizing. In the middle and late stages of growth of tomatoes, cucumbers and other melons and fruits, in order to reduce the number of artificially damaged fruits, a method of using water (belt) fertilizer can be adopted. Such as celery, spinach and other densely planted vegetables after the ridge is closed, it is difficult to carry out the application of the hole or ditch, and the method of applying the surface of the combined irrigation can be used to top dress. This method can reduce fertilizer nutrient loss and increase root absorption rate. In addition to watering, there are also forms such as sprinkler irrigation, drip irrigation and micro-irrigation. In the modern high-intelligent automated greenhouse group, the above several methods are used to fertilize, which can save water and reduce fertilizer costs. Due to its large investment, the quality of fertilizers and pipelines are strict, but it cannot be widely applied in China. However, it is the most preferred method of fertilization for the production of pollution-free vegetables.
4 Foliar spray: It has the characteristics of simple operation, economical fertilizer and fast absorption of vegetables. At the same time, the fertilizer and pesticide can be mixed and sprayed, which can not only satisfy the nutrient supply, but also prevent pests and diseases. It can be carried out in the seedling stage, the growth period and the late growth stage of vegetables. The instant fertilizer is formulated into a certain concentration of fertilizer solution, and sprayed on the leaves, stems, flowers or fruits by a sprayer, mainly sprayed on the back of the leaves, and the absorption speed is fast. At the same time, we must master the spray concentration, otherwise it will burn the leaves, stems or cause the flowers to fall. Adjusting the pH of the fertilizer solution during spraying can improve the effect of spraying fertilizer. If the active ingredient in the fertilizer is mainly anion, the fertilizer solution is preferably adjusted to slightly acidic; if the active ingredient in the fertilizer is mainly cation, it should be adjusted to slightly alkaline. The climatic conditions will also affect the spraying effect, and the selection should be carried out in the absence of wind and sunny days. And in the evening of the day or the morning after the dew is dry, the spraying effect is better.
2 kinds of fertilizer: the role of seed fertilizer is to supplement the lack of base fertilizer, on the one hand to supply nutrients in the early growth stage of vegetable crops; on the other hand to promote seed germination, to ensure the supply of nutrients in the critical period of nutrition. The seed fertilizer is generally used with fully decomposed organic fertilizer or quick-acting fertilizer, and the application amount is small. Various quick-acting chemical fertilizers, fully decomposed organic fertilizers (such as cake fertilizer, poultry manure, etc.), biological fertilizers, and trace element fertilizers can be used for seed fertilizer application. The fertilizer efficiency of the seed fertilizer is determined by factors such as soil, fertilization techniques and cultivation management measures. Because the fertilizer and seeds are close together. Therefore, the quality and dosage of fertilizers are particularly strict, otherwise it may cause burning and burning of seedlings, resulting in lack of seedlings and ridges. The specific application methods of seed fertilizer include seed dressing, soaking and rooting. a. Seed dressing method: a certain amount of fertilizer is evenly mixed with a certain amount of seeds, and then seeded. Suitable fertilizers for seed dressing include biological fertilizers and trace element fertilizers. Fertilizers that are too acidic, over-alkali, highly hygroscopic, and contain toxic ingredients are not suitable for seed dressing. b. Soaking method: Soak the seeds with a certain concentration of fertilizer solution, then remove the seeds and dry them for seeding. If the water is diluted to a certain concentration with decomposed organic fertilizer liquid or biogas water, soaking cucumbers and kidney beans can increase the germination rate and emergence rate. c. Roots: It is often used for transplanting tomato and eggplant seedlings. The biological fertilizer, micro-fertilizer and the like are mixed with a certain proportion of organic fertilizer or loam to form a paste, and transplanting after rooting can increase the survival rate of the seedling and facilitate the growth of the seedling.
3 Top dressing: The purpose of top dressing is to supplement the nutrients needed for the growth and development of vegetable crops. Generally, quick-acting fertilizers and decomposed organic fertilizers can be used as top dressings. The amount of topdressing depends on the amount of base fertilizer, vegetable growth, soil fertility and climatic conditions. Specific application methods are: a. Shi Shi or acupoint application, deep pursuit of covering soil. When applying the volatile nitrogen fertilizer such as urea or ammonium sulfate in the vegetable garden, it should be applied 8-10 cm deep and covered with soil. Immediately after application, water should be poured to make the fertilizer and water dissolve, and smoothly move to the rhizosphere, and be absorbed by the roots in time. When phosphate fertilizers such as calcium phosphate and ammonium phosphate are used as top dressings, they should be applied to the root layer in a concentrated ditch or a hole to increase the contact area with the roots and reduce soil fixation. b. Fertilizing and fertilizing. In the middle and late stages of growth of tomatoes, cucumbers and other melons and fruits, in order to reduce the number of artificially damaged fruits, a method of using water (belt) fertilizer can be adopted. Such as celery, spinach and other densely planted vegetables after the ridge is closed, it is difficult to carry out the application of the hole or ditch, and the method of applying the surface of the combined irrigation can be used to top dress. This method can reduce fertilizer nutrient loss and increase root absorption rate. In addition to watering, there are also forms such as sprinkler irrigation, drip irrigation and micro-irrigation. In the modern high-intelligent automated greenhouse group, the above several methods are used to fertilize, which can save water and reduce fertilizer costs. Due to its large investment, the quality of fertilizers and pipelines are strict, but it cannot be widely applied in China. However, it is the most preferred method of fertilization for the production of pollution-free vegetables.
4 Foliar spray: It has the characteristics of simple operation, economical fertilizer and fast absorption of vegetables. At the same time, the fertilizer and pesticide can be mixed and sprayed, which can not only satisfy the nutrient supply, but also prevent pests and diseases. It can be carried out in the seedling stage, the growth period and the late growth stage of vegetables. The instant fertilizer is formulated into a certain concentration of fertilizer solution, and sprayed on the leaves, stems, flowers or fruits by a sprayer, mainly sprayed on the back of the leaves, and the absorption speed is fast. At the same time, we must master the spray concentration, otherwise it will burn the leaves, stems or cause the flowers to fall. Adjusting the pH of the fertilizer solution during spraying can improve the effect of spraying fertilizer. If the active ingredient in the fertilizer is mainly anion, the fertilizer solution is preferably adjusted to slightly acidic; if the active ingredient in the fertilizer is mainly cation, it should be adjusted to slightly alkaline. The climatic conditions will also affect the spraying effect, and the selection should be carried out in the absence of wind and sunny days. And in the evening of the day or the morning after the dew is dry, the spraying effect is better.
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
China Compression Springs Stainless Steel Compression Spring
Compression Springs,Heavy Duty Compression Springs,Stainless Steel Compression Springs,Metal Springs Compression
applicaiton: viation,automotive, motorbike, bicycle, automatic equipment, household appliance, medical device ,toy, telecommunication,computer, instrument and meter,furniture, electric tools,mold and other industries
China leading manufacturers and suppliers of Compression Springs,coil spring,compress spring coil,Heavy Duty Compression Sprins,Stainless Steel Compression Spring,Metal Compression Spring, etc.
coil spring,compress spring coil,Heavy Duty Compression Sprins,Stainless Steel Compression Spring,Metal Compression Spring
Shenzhen Lanejoy Technology Co.,LTD , https://www.brassinsert.net