Keywords: scientific fertilization
The northwest region includes Xinjiang, Qinghai, Gansu, Ningxia, Shaanxi, and the west of Inner Mongolia and is an important grain, cotton, and oil production base in China. In this area, mountains, plateaus, and basins are distributed alternately, and the climate spans the inland arid, semi-arid, and northwest Yellow River areas. Northwest China is affected by natural conditions and planting habits. Fertilizer consumption has its own characteristics. Coupled with long-term large-scale chemical fertilizer input, large amounts of soil nutrients are accumulated, which reduces the income of agricultural fertilizer production. Therefore, according to different soil types, land characteristics, field locations, and the relationship between planting cornices and nutrient supply, scientific fertilization should be done according to local conditions.
Soil is generally classified into sand, loam, and clay. Different soil types have great differences in structure and nutrient content. Therefore, there are also great differences in fertilizer requirements and application methods. For example, sandy soils are characterized by their inability to retain water and retain fertilizer. Therefore, organic fertilizers must be used to improve the soil. Fertilizers should be applied in small quantities several times. The characteristics of clay soils are high in nutrient content. When fertilizing, attention must be paid to early-stage and late-stage fertilization. Loamy soils are characterized by higher soil nutrient content than sandy soils, but are prone to lack of fertilizers when crop yields are high. Therefore, according to the characteristics of different soils, targeted fertilizers should be used.
The supply of nutrients and the relationship between soil properties. For example, saline-alkali land is characterized by high salt content and abundant nutrients. However, due to the presence of salt such as sodium chloride and potassium chloride, a large amount of calcium and phosphorus nutrients in the soil are adsorbed on the surface of soil particles, resulting in frequent lack of phosphorus, so pay attention to phosphorus and calcium. Phosphorus lime is worthwhile use, avoid alkaline fertilizer, acidic fertilizer is better, organic fertilizer is the best choice. Acidic sites are characterized by low pH values, very high levels of harmful aluminum, and are prone to lack of elements such as calcium and magnesium, but the effectiveness of phosphorus under acidic conditions has increased significantly. Therefore, in practice, it may be considered to use lime, limestone, or alkaline fertilizers to neutralize soil acidity, and then consider supplementing other nutrients. The soil is a kind of soil with low content of organic matter and lack of nutrient of nitrogen and phosphorus. In practice, nitrogen should be supplemented with phosphorus on the basis of applying organic fertilizer, and attention should be paid to supplementing trace elements.
The relationship between nutrient supply and plots. The position of the block in the village is closely related to the fatness of the field. Different fertilization methods can be selected according to actual conditions in the production practice. Such as far field thin, due to the large amount of nitrogen fertilizer production, little organic fertilizer application, resulting in less organic matter, phosphorus deficiency, fertilization should pay attention to increase organic fertilizer, phosphate fertilizer. For nitrogen fertilizers, it depends on the past application and increase of production, so as to ensure balanced growth of the plots. Because of the proximity to the village and the large amount of organic fertilizer that has been used in the village near the village, the amount of nitrogen and phosphorus input is large, so pay attention to weight loss and efficiency gains.
Consider the previous crop and develop a fertilization plan. In general, due to the great differences in planting systems in different regions of China, the Northeast China is basically cooked once a year, Huanghuaihai two crops a year, and most of the southern regions are two or three ripe and one year, different crops absorb soil nutrients. There are also significant differences. Therefore, before fertilization, the amount of nutrients removed from the previous crop should be taken into consideration, and the fertilization amount for the next crop should be set. Such as lotus root, peas, rapeseed, buckwheat loquat, generally more phosphorus consumption, post-work should pay attention to supplemental phosphate fertilizer. Without organic fertilisers, phosphorus is generally deficient. This type of plot can be supplemented with nitrogen on the basis of applying organic fertilizers, and nitrogen and phosphorus should be used when organic fertilizers are not applied.
Corn Starch
Corn Starch,Organic Corn Starch,Corn Starch Native,Food Grade Corn Starch
SHANDONG BAISHENG BIOTECHNOLOGY COM , https://www.baishengbioproducts.com