Field Crops Best Dressing Period
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Maize: Under the principle of balanced fertilization, maize is the peak period of nutrient absorption after jointing until the big bell-mouth period, and generally the first fertilizer can be applied before and after jointing. Apply 10 kg of urea per acre; 7-10 days before tasseling, apply the second fertilizer, and apply 20 kg of urea per acre. If the base fertilizer and seed fertilizer are more abundant and the soil is very fertile, one can top-dressing and combine the second weeding for deep fertilization.
Rice: The absorption of nitrogen by rice is gradually increased after returning green, and reaches the highest peak of fertilizer absorption at the peak of tillering. In order to promote the early emergence of rice, early delivery, early application and re-appropriate sub-fertilizer. Usually 7-10 days after transplanting. Urea urea 10 kg per mu, heading and then topdressing urea 15-20 kg.
Gao Yan: In order to meet the requirements of sorghum from jointing to heading, it is necessary to chase the first fertilizer at the jointing stage and apply 8-12 kilograms of urea per acre; Urea 10 kg.
Peanut: The critical period of nutrients for peanuts is in the pre-harvest period. About 15 days after the emergence of peanuts, flower buds begin to differentiate and nodule formation begins. When two pairs of lateral branches appear in the plant, nitrogen fertilizer should be applied in a timely manner, and 5-10 kg of urea should be applied per acre. Peanuts combined with earth after flowering, spraying multi-element micro-fertilizer, will help reduce the empty fruit rate and increase peanut production.
Soybeans: Soybeans are more nitrogen-needed crops, but it has Rhizobia nitrogen fixation that can solve some of the nitrogen sources. However, it is also necessary to top-dress during the growth period. Usually, nitrogen fertilizer is applied once at the initial flowering stage of soybeans, which can reduce the rate of falling flowers and flowers, and can prolong the life span of plants, increase grain weight, and increase yield. Generally, 8-12 kg of urea can be topdressed per mu. In the period of soybean pods, if multiple fertilizers are applied to the leaves for one time, the yield increase effect is more obvious.