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Fertilization Techniques of Several Special Fertilizers for Crops
Peanuts: China's peanuts are planted on hills, in dry and thin areas, with shallow soil layers and low fertility. Therefore, it is necessary to combine the growth uniformity of peanuts and the law of fertilizer requirements during planting. Application method: Before sowing, the fertilizer applied in combination with the cultivated land is called base fertilizer, also called base fertilizer; when sowing or ditching, when opening the hole, the fertilizer applied is called seed fertilizer. The basal fertilizer is the basis for strong seedlings, prosperous flowers, Fruit and fruit. The full amount of nitrogen and potassium should be applied, and the principle of adding phosphate fertilizer should be applied twice. Apply basic fertilizer and top-dressing properly. In general, the root absorption capacity of peanut is the strongest before the flowering needle stage. Rice: Rice is a food crop that requires more fertilizer. Generally, it needs more nutrients during the seedling stage and the booting stage, especially at the grain filling stage, which requires a large amount of nitrogen. Appropriate application of topdressing can meet the nutrition of rice at the stage of strong grain. Fertilization method: Rice generally begins to fertilize after drawing water, and it is generally based on basal fertilizer application. The specific application method is: 40-50 kilograms per acre of paddy field, combined with site preparation, the last time tilling, even spreading, application The fertilizer can be applied to topdressing at the seedling stage and heading stage as appropriate, which can increase income by about 15-30%. Soybeans: Soybeans need more fertilizer, and its absorption and accumulation of nutrients is different from other crops. Its characteristics are that its vegetative growth and reproductive growth are parallel for a long time, and it only reaches the highest point at the beginning of flowering. Fertilization techniques and methods: Based on the characteristics of soybeans and the range of root activity, combined with the local soil conditions and farming methods, appropriate techniques should be adopted to spread and apply. The basal fertilization is carried out before the autumn turning or sowing, in order to supply the raw materials needed for the whole growth process of soybeans and to promote the increase of soybean production. However, fertilization should not be excessive, and the water supply must be ensured after fertilization, and the variety plant type and soil fertility must be fully considered.
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