Apply key fertilizers to prevent defertilization and premature senescence Film-mulched peanuts grow vigorously and consume a lot of nutrients during the pod-setting stage. Defertilization often occurs in the later stage, leading to leaf fall, premature aging, and affecting pod expansion. Topdressing should be timely to prevent premature aging. One is the integrated topdressing of water and fertilizer. For plots with drip irrigation facilities under the film, 15 kg/mu of water-soluble fertilizer (17-5-23) can be drip-irrigated during the pod and full fruit period. The second is spray fertilizer on the leaves. In the later stage of pod setting, spray 120~150 grams of potassium dihydrogen phosphate + 350~400 grams of urea + 70~80 grams of 75% chlorothalonil wettable powder on the leaves, spray once every 10~15 days, and spray 2 Second, to extend the life of peanuts' functional leaves. The third is to supplement micro-fertilizers. For iron-deficient plots, 0.2%~0.5% ferrous sulfate solution can be sprayed on the foliar surface of new leaves when the new leaves turn yellow, and spray twice; for boron-deficient plots, 0.1%~0.25% boric acid or borax aqueous solution can be sprayed at the flower needle stage; Zinc-deficient plots can be sprayed with 1%~2% zinc sulfate solution at the flowering needle stage.
Watering the key water to promote growth and development. First, watering the flowering needles will promote flowering and needles, increase the effective number of flowers and fruits (needles) and improve the quality of the population. Generally, in spring peanut fields, when the leaves of the plants just start to turn white and appear wilting around noon, they need to add water. High-yield single-grain seeding fields, strong soil moisture and fertilizer retention, strong seedlings, and sufficient flower bud differentiation, it is important to water the flower water to ensure that the effective number of flowers and fruits (needles) is increased in the later stage of the flower needle. Summer peanuts have a short flower needle period and cannot be exposed to drought. Water should be timely watered in case of drought. The second is to pour pod-setting water to ensure suitable soil moisture, promote pod expansion, and lay the foundation for more and full fruits. The third is to pour the full fruit water, raise the roots to prevent premature aging of the plant, increase the full fruit, increase the fruit weight, and prevent and control aflatoxin pollution.
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