Peanut and soybean cultivation in Haimen City are relatively scattered. Farmers do not pay attention to the top-dressing fertilizer during the growing season, which is an important reason for the stagnant production in the past years. Targeting fertilization of peanuts and soybeans in different conditions is an important measure to increase production levels.
Peanuts are topdressing at the flowering stage. At this time, the nitrogen fixation ability of the peanut rhizobia gradually declines, and the plant enters the peak period of nutrient demand. There are two situations: (1) There is no field for phosphate fertilizer or compound fertilizer in the base fertilizer. Due to the lack of early nutrients, the nutrition is generally weak, and the main purpose is to increase fertilizer and promote growth. Usually about 10 kilograms of high-concentrated compound fertilizer per acre is dissolved in water and then poured. If the color of leaves is light, urea is added to 3-5 kg. (2) The base fertilizer contains phosphate fertilizer or compound fertilizer. If the plants grow generally, 5-8 kilograms of urea are used per acre; soils with higher fertility and less prosperous plants will not be applied.
Soybean (1) Qiao Shi Hua Fei Fei. After flowering, soybean enters vegetative growth and reproductive growth, and the demand for nutrients reaches a peak. At this time, if the nutrient is lacking and the light is insufficient, a large number of flower buds will fall off. Generally, 8-10 kg of urea is poured per acre. For basal fertilizer without P and K fertilization, use 10-12 kg of high-concentration compound fertilizer per acre to dissolve and pour. (2) Foliar fertilization. In the late growth stage of soybean, the root activity and the ability of sucking fertilizer are weakened, and the fertilization is inconvenient, and the suction ability of the leaves is strong, and the foliar spraying can be performed. The growing and weak fields can be sprayed with 0.3% urea solution and 0.2% potassium dihydrogen phosphate solution to the dripping water; the growing trend can be sprayed separately with 0.2% potassium dihydrogen phosphate solution. Most fields can spray trace element fertilizer.
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