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立春后,温度回升,麦苗生长逐渐加快,进入拔节期,随着气温的回升转暖,植株的代谢活动迅速加强,叶片大量增生、增大,茎杆伸长、充实,转入营养生长和生殖生长并进阶段。这个时期对环境反应敏感,要求充足的光照和适宜的肥水,而此时,我省往往阴雨连绵、日照不足、寒潮频繁并伴有大风暴雨,对小麦正常生长极为不利,是增产的障碍因素之一。因为阴雨天气持续时间
After the beginning of spring, the temperature rose, the growth of wheat seedlings gradually accelerated into the jointing stage, with the warming of the temperature rise, the plant metabolic activity rapidly strengthened, a large number of leaf proliferation, increased stem elongation, enrichment, into vegetative growth and reproduction Grow and progress. This period is sensitive to the environment and requires sufficient light and appropriate fertilizer. At this moment, the rainy and rainy days in our province are often accompanied by lack of sunshine and frequent cold waves accompanied by heavy rain and storms, which are extremely unfavorable to the normal growth of wheat and an obstacle to increasing production one. Because of the rainy weather duration