The phosphorus in the soil generally cannot meet the crop needs and must be supplemented by fertilization, but it must be applied scientifically to exert the maximum effect. Pay attention to the following problems when applying:
First, the early application of crops in the seedling stage to absorb phosphorus is the fastest, to account for half of the total phosphorus absorption in the growing season, if the phosphorus deficiency in the seedling stage, will affect the later growth, even if the later application, it is difficult to recover the loss of phosphorus deficiency, so Phosphorus should not be lost in the seedling stage.
Second, the fine application of superphosphate is easy to absorb moisture and agglomerate during storage. When applied, it should be broken and sieved to facilitate root absorption.
Third, concentrated phosphorus application is easily disabled by iron, aluminum, calcium, etc. in the soil. Therefore, it should be applied to the acupoints and strips to fix the phosphorus around the seeds and roots, which can reduce the fixation with the surrounding soil and facilitate the root absorption.
4. Mixing with organic fertilizers, especially the combination of calcium, magnesium and phosphorus fertilizers and organic fertilizers, can convert the insoluble phosphorus in the phosphate fertilizer into the available phosphorus that can be utilized by crops.
5. The layered phosphate fertilizer has little mobility in the soil, and where it is basically where it is. Therefore, the application of phosphate fertilizer in the bottom layer and the shallow layer is to apply the phosphate fertilizer in the shallow layer, which is beneficial to the absorption of the seedlings, thereby promoting early returning and quickning. Generally, 20-40 kg of phosphate fertilizer is applied per mu, one third of the shallow layer is applied, and two thirds of the deep layer is applied.
6. Mixing with nitrogen fertilizers The crops absorb a certain proportion of nutrients. If the ratio is out of balance, it will not grow well. Single application of nitrogen fertilizer, root system is not well developed, easy to fall, and vulnerable to pests and diseases, and accelerate the excessive disappearance of nitrogen in the soil, causing imbalance of nitrogen and phosphorus. The combination of nitrogen and phosphorus can balance the nutrients and promote the roots to lay the foundation for high yield.
7. When the crops are sprayed outside the roots, the roots are gradually aging, and the ability to absorb nutrients is weakened, often resulting in phosphorus deficiency. At this time, the water-soluble calcium superphosphate can be sprayed onto the crop leaves to allow the phosphorus to enter the plant through the pores or stratum corneum of the foliage. Cereal crops can be used at a concentration of 1-3%, and vegetables can be sprayed at a concentration of 1% on a sunny morning or evening.
Huaxian Agricultural Technology Promotion Center Lu Shuguang
First, the early application of crops in the seedling stage to absorb phosphorus is the fastest, to account for half of the total phosphorus absorption in the growing season, if the phosphorus deficiency in the seedling stage, will affect the later growth, even if the later application, it is difficult to recover the loss of phosphorus deficiency, so Phosphorus should not be lost in the seedling stage.
Second, the fine application of superphosphate is easy to absorb moisture and agglomerate during storage. When applied, it should be broken and sieved to facilitate root absorption.
Third, concentrated phosphorus application is easily disabled by iron, aluminum, calcium, etc. in the soil. Therefore, it should be applied to the acupoints and strips to fix the phosphorus around the seeds and roots, which can reduce the fixation with the surrounding soil and facilitate the root absorption.
4. Mixing with organic fertilizers, especially the combination of calcium, magnesium and phosphorus fertilizers and organic fertilizers, can convert the insoluble phosphorus in the phosphate fertilizer into the available phosphorus that can be utilized by crops.
5. The layered phosphate fertilizer has little mobility in the soil, and where it is basically where it is. Therefore, the application of phosphate fertilizer in the bottom layer and the shallow layer is to apply the phosphate fertilizer in the shallow layer, which is beneficial to the absorption of the seedlings, thereby promoting early returning and quickning. Generally, 20-40 kg of phosphate fertilizer is applied per mu, one third of the shallow layer is applied, and two thirds of the deep layer is applied.
6. Mixing with nitrogen fertilizers The crops absorb a certain proportion of nutrients. If the ratio is out of balance, it will not grow well. Single application of nitrogen fertilizer, root system is not well developed, easy to fall, and vulnerable to pests and diseases, and accelerate the excessive disappearance of nitrogen in the soil, causing imbalance of nitrogen and phosphorus. The combination of nitrogen and phosphorus can balance the nutrients and promote the roots to lay the foundation for high yield.
7. When the crops are sprayed outside the roots, the roots are gradually aging, and the ability to absorb nutrients is weakened, often resulting in phosphorus deficiency. At this time, the water-soluble calcium superphosphate can be sprayed onto the crop leaves to allow the phosphorus to enter the plant through the pores or stratum corneum of the foliage. Cereal crops can be used at a concentration of 1-3%, and vegetables can be sprayed at a concentration of 1% on a sunny morning or evening.
Huaxian Agricultural Technology Promotion Center Lu Shuguang
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
Dingnan Songyuan Chemical Co., Ltd. , http://www.jxresin.com