First, the fruit chasing fruit fertilizer in the middle of the growth period, peanut vegetative growth and reproductive growth at the same time from the beginning of the peak period, not only stems and leaves grow faster, but also a large number of flowers, needles, a large number of fruit needles into the soil into pods, The need for nutrients has increased. Therefore, for the field that has not been topdressed at the seedling stage, it is necessary to chase urea 7.5 to 10 kg in the initial flowering period, 25 to 30 kg of superphosphate, and 10 kg of potassium sulfate; in the flowering stage, the soil is combined with the soil, and the gypsum powder is applied to the soil. 30 kg to promote pod development and increase the rate of fruit filling. In addition, if the heart of the plant is yellowish and green, a 0.3% to 0.5% aqueous solution of ferrous sulfate should be sprayed.
Second, the soil and the fruit can be used to strengthen the soil layer, so that the fruit needle into the soil early, early results. The soil should be closed in the field, a few fruit needles have been put into the soil, and a large number of fruit needles are placed before the soil. The method of cultivating the soil is as follows: a grass ring is placed on the hook, and the squat is slammed, and the soil is placed on both sides of the base of the peanut, but the base of the stem is not to be buried. The soil is generally divided into two times, and the second time is carried out about 10 days after the first soiling.
Third, watering and sputum flowering needle period and pod-forming period is the critical period of water demand of peanuts, which is very sensitive to water, so pay attention to water management. The suitable soil water content during the flowering and pod-forming period is 60% to 70% of the maximum water holding capacity in the field, and timely watering in case of drought. Watering method should choose sprinkler irrigation or small water rapid furrow irrigation, avoid flooding. Discharge in time after precipitation, so as not to cause a lot of rotten fruit, reduce production and quality.
Fourth, the control of the tree to maintain stability in the middle of the fertility, peanuts tend to fall easily after the long, resulting in severe production cuts. Therefore, the middle and high-yield peanut fields should be sprayed with 15% paclobutrazol WP 50g and 50 kg at the end of the flowering period and the main stem is more than 40 cm high, so as to prevent the plants from lodging.
V. Prevention and control of pests and diseases The main pests and diseases in the middle stage of peanuts are leaf spot, cockroach and cotton bollworm. In the early stage of leaf spot disease, 40% carbendazim suspension 1000 times solution or 50% thiophanate WP 1500-2000 times solution can be sprayed once every 7 to 10 days, even 2 to 3 times. Apply 50 kg of liquid per acre. The control of cockroaches should be made with 3% methyl isoflavone granules 2.5~3 kg or 50% phoxim 0.25 kg plus fine soil 30-40 kg when mixed with soil. Shun ridges are scattered near the plants, and then cultivating and cultivating the soil. The cotton bollworm can be sprayed with 20% of the fast-killing 1500 times solution.
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