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为充分发挥夏玉米的增产潜力,实现夏玉米进一步高产。我县开展了夏玉米缓释肥一次性底施高产栽培试验、示范工作,取得了较好效果。一、夏玉米需肥规律1、玉米是一种高产作物,每生产100公斤的籽粒,需要吸收纯N2.5公斤左右、P_2O_51.2公斤左右、K_2O_2.0公斤左右,吸收氮、磷、钾的比例大体为1:0.48:0.8。2、由于玉米所处季节对其生长极为有利,前期生长快,出苗后很快进入营养生长和生殖生长并进阶段,因此,对氮、磷的吸收更集中,吸收峰
In order to give full play to summer corn yield potential, to achieve further summer maize high yield. My county carried out a one-time summer corn slow-release high-yield cultivation test, demonstration work, and achieved good results. First, the law of summer corn needs fertilizer 1, corn is a high yield of crops, each producing 100 kg of grain, need to absorb pure N2.5 kg, P_2O_51.2 kg, K_2O_2.0 kg, absorption of nitrogen, phosphorus and potassium The proportion is about 1: 0.48: 0.8.2. Because the corn is very favorable to its growth in the season, the growth in the early stage is quick, and it enters the stage of vegetative and reproductive growth and enters the advanced stage soon after emergence. Therefore, the absorption of nitrogen and phosphorus is more concentrated , Absorption peak