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一、根外追肥保顶叶花生根系后期吸收能力减弱、衰退,为弥补后期供肥的不足,从结荚后期开始,每隔7～10天,667平方米叶面喷施1%～2%的尿素和2%～3%的过磷酸钙(或0.3%的磷酸二氢钾)溶液2～3次,每次50千克,以延长顶叶(茎枝上部的4～6片叶)功能期,提高荚果饱满率。
First, top-dressing top-leaf peanut root top peanut absorption capacity weakened, recession, in order to make up for the lack of late, starting from the late pod, every 7 to 10 days, 667 square meters of foliar spray 1% to 2% Of urea and 2% -3% of superphosphate (or 0.3% of potassium dihydrogen phosphate) solution 2 to 3 times each 50 kg to extend the parietal (upper stem 4 to 6 leaves) functional period , Increase pod fullness.