Phosphorus is one of the three elements of crop nutrition. Phosphorus in soil generally cannot meet the needs of crop growth and development, and must be supplemented by phosphorus application. Phosphate fertilizer is easily fixed by soil, and it has little mobility in soil, slow conversion of fertilizer efficiency, and difficult to absorb and utilize crops in time. The current utilization rate is only 10%-25%. Therefore, the application of phosphate fertilizer due to crop science due to time and place is a problem that needs to be solved urgently in current agricultural production.
Change the general application as the key application. Consideration should be given to applying phosphorus-deficient plots to eliminate the limiting factor of phosphorus deficiency. Generally, the infertile land far away from the village, the newly leveled raw land block, and the land where the farmer's fertilizer is applied less year round should be given priority. In terms of soil quality, the application of phosphate fertilizer in yellow, red soil dry fields, yellow mud fields, duck hoe fields, and cold soak fields has increased significantly. Fertilizers, loam, and plots of continuous application of large amounts of phosphate fertilizer in previous years may be appropriately applied. In the case of crops, it should be applied to crops that are most sensitive to phosphorus reactions, such as rice, rape, wheat, cotton, peanuts, beans, potatoes, melons or Chinese milk vetch, etc. The effect of increasing nitrogen with phosphorus.
Change the application as a hole. Phosphate fertilizer must first be dissolved and dissociated by water, and the roots or stems of the crop can be absorbed and utilized smoothly. Therefore, if the phosphate fertilizer is applied to the surface or dry soil, it will cause waste and loss. Therefore, it is best to use phosphorus fertilizer to stick the roots of rice or apply it deep into the furrow. Phosphorus application to dry soil crops can be carried out by seed dressing or hole application or strip application, so that it is concentrated around the seeds or roots, and the phosphate fertilizer is actually sent to the "mouth" of the root system.
Change the pursuit as the bottom. Phosphate fertilizer is easy to chemically change with iron, aluminum, calcium, magnesium and other elements in the soil, and becomes a poorly soluble phosphate fertilizer. This is called "phosphorus fixation." Therefore, it is better to mix organic fertilizers (such as farmyard manure) together when applying phosphorus, so that the organic fertilizer is adsorbed and decomposed and then applied to the soil, which is better than the application effect. Because in the process of accumulation, organic fertilizer can decompose organic acid and emit heat, which can promote the solubility of phosphate fertilizer, thereby increasing the effective content of phosphate fertilizer. Moreover, the humus formed by the organic fertilizer in the process of decomposing is an amphoteric colloid, which can act as a buffer in an acidic or alkaline soil to keep the soil close to a neutral environment, thereby improving the effectiveness of the phosphate fertilizer. Therefore, the phosphate fertilizer can be applied at one time to enhance the fertilizer efficiency and reduce the fixation.
Change the single application as a mixed application. Currently used superphosphate, calcium magnesium phosphate, phosphate rock powder, etc., only contains phosphorus, but does not contain nitrogen and potassium fertilizer, so when applied with nitrogen fertilizer, combined with nitrogen and potassium fertilizer, can coordinate the needs of crops for nutrients, play nitrogen, The synergistic effect between phosphorus and potassium is significantly higher than that of phosphorus alone. A commonly used compounding ratio is nitrogen: phosphorus: potassium is 1:2:2. Phosphate fertilizers, especially calcium, magnesium and phosphorus fertilizers, can be combined with organic fertilizers to convert the insoluble phosphorus in the phosphate fertilizer into an effective phosphorus that is easily absorbed by crops.
Change the soil to apply as a foliar spray. Phosphate fertilizer moves in the soil in a small range, unlike nitrogen and potassium fertilizers that can move vertically and horizontally in the soil. Moreover, in the middle and late stages of the crop, the field is inconvenient, the field is inconvenient to operate, the root system is gradually aging, the ability to absorb nutrients is weakened, and phosphorus deficiency is often caused. At this time, the use of foliar sprayed phosphate fertilizer has a significant effect on yield increase. The water-soluble calcium superphosphate can be sprayed onto the leaves to allow the phosphorus to enter the crop through the pores or stratum corneum of the foliage. Gramineous crops such as rice can be sprayed at a concentration of 2% to 3%, and rapeseed and vegetables can be used at a concentration of 1%. Spraying on the sunny morning after the dew is dry or before the dew is applied in the evening, there is a significant increase in yield.
Author: Cao Liu Hsing Wu Di ring
Source: China Cooperation Times
Change the general application as the key application. Consideration should be given to applying phosphorus-deficient plots to eliminate the limiting factor of phosphorus deficiency. Generally, the infertile land far away from the village, the newly leveled raw land block, and the land where the farmer's fertilizer is applied less year round should be given priority. In terms of soil quality, the application of phosphate fertilizer in yellow, red soil dry fields, yellow mud fields, duck hoe fields, and cold soak fields has increased significantly. Fertilizers, loam, and plots of continuous application of large amounts of phosphate fertilizer in previous years may be appropriately applied. In the case of crops, it should be applied to crops that are most sensitive to phosphorus reactions, such as rice, rape, wheat, cotton, peanuts, beans, potatoes, melons or Chinese milk vetch, etc. The effect of increasing nitrogen with phosphorus.
Change the application as a hole. Phosphate fertilizer must first be dissolved and dissociated by water, and the roots or stems of the crop can be absorbed and utilized smoothly. Therefore, if the phosphate fertilizer is applied to the surface or dry soil, it will cause waste and loss. Therefore, it is best to use phosphorus fertilizer to stick the roots of rice or apply it deep into the furrow. Phosphorus application to dry soil crops can be carried out by seed dressing or hole application or strip application, so that it is concentrated around the seeds or roots, and the phosphate fertilizer is actually sent to the "mouth" of the root system.
Change the pursuit as the bottom. Phosphate fertilizer is easy to chemically change with iron, aluminum, calcium, magnesium and other elements in the soil, and becomes a poorly soluble phosphate fertilizer. This is called "phosphorus fixation." Therefore, it is better to mix organic fertilizers (such as farmyard manure) together when applying phosphorus, so that the organic fertilizer is adsorbed and decomposed and then applied to the soil, which is better than the application effect. Because in the process of accumulation, organic fertilizer can decompose organic acid and emit heat, which can promote the solubility of phosphate fertilizer, thereby increasing the effective content of phosphate fertilizer. Moreover, the humus formed by the organic fertilizer in the process of decomposing is an amphoteric colloid, which can act as a buffer in an acidic or alkaline soil to keep the soil close to a neutral environment, thereby improving the effectiveness of the phosphate fertilizer. Therefore, the phosphate fertilizer can be applied at one time to enhance the fertilizer efficiency and reduce the fixation.
Change the single application as a mixed application. Currently used superphosphate, calcium magnesium phosphate, phosphate rock powder, etc., only contains phosphorus, but does not contain nitrogen and potassium fertilizer, so when applied with nitrogen fertilizer, combined with nitrogen and potassium fertilizer, can coordinate the needs of crops for nutrients, play nitrogen, The synergistic effect between phosphorus and potassium is significantly higher than that of phosphorus alone. A commonly used compounding ratio is nitrogen: phosphorus: potassium is 1:2:2. Phosphate fertilizers, especially calcium, magnesium and phosphorus fertilizers, can be combined with organic fertilizers to convert the insoluble phosphorus in the phosphate fertilizer into an effective phosphorus that is easily absorbed by crops.
Change the soil to apply as a foliar spray. Phosphate fertilizer moves in the soil in a small range, unlike nitrogen and potassium fertilizers that can move vertically and horizontally in the soil. Moreover, in the middle and late stages of the crop, the field is inconvenient, the field is inconvenient to operate, the root system is gradually aging, the ability to absorb nutrients is weakened, and phosphorus deficiency is often caused. At this time, the use of foliar sprayed phosphate fertilizer has a significant effect on yield increase. The water-soluble calcium superphosphate can be sprayed onto the leaves to allow the phosphorus to enter the crop through the pores or stratum corneum of the foliage. Gramineous crops such as rice can be sprayed at a concentration of 2% to 3%, and rapeseed and vegetables can be used at a concentration of 1%. Spraying on the sunny morning after the dew is dry or before the dew is applied in the evening, there is a significant increase in yield.
Author: Cao Liu Hsing Wu Di ring
Source: China Cooperation Times
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
Cutting Board Rack,Cutting Board steel rack,Cutting Board Organizer rack,Stainless Steel Cutting Board Rack,Chopping Board Rack,Stainless Steel Chopping Board Rack, The materials are used 304 stainless steel, easy to clean, never rust!
Kichen Rack is made of high quality 304 stainless steel, This kind of material steel luxury, never rust, resist corruption, easily clean, safe, healthy and durable. Prevent rust or chemicals from contaminating food and damaging health
Cutting Board Rack,cutting board storage rack,cutting board holder,Stainless Steel Cutting Board Rack,Chopping Board Rack
Shenzhen Lanejoy Technology Co.,LTD , https://www.szcoolingrack.com