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玉米是一种喜温的C_4植物,对温度条件要求较高。在生长期内受到低温冷害的侵袭,常造成大幅度减产。本试验是通过低温年喷施叶面肥对玉米种子田增产效应进行了研究。结果表明:在苗期、大喇叭口期、吐丝期辅助喷施叶面肥能够提高叶绿素含量,增大光合作用强度,加快植株生长速度,增加穗粒数、百粒重;在低温年份能够有效防御低温冷害,提高种子成熟度,保证玉米种子高产、稳产。
Corn is a thermophilic C_4 plant, which requires high temperature conditions. In the growing period of low-temperature chilling attacks, often resulting in a substantial cut. In this experiment, the effects of spraying foliar fertilizer on the yield increase of maize seed field were studied. The results showed that spraying foliar fertilizer at seedling stage, big bell mouth stage and silking stage could increase the content of chlorophyll, increase the photosynthesis intensity, accelerate the growth of plant, increase the number of grains per spike and increase the weight of grains per 100 grains; Effectively prevent chilling damage, improve seed maturity, ensure high yield and stable yield of corn seeds.