忻州市2014年降水因子对玉米生长影响分析

Analysis on the Effect of Precipitation Factor on Maize Growth of Xinzhou in 2014

2014年忻州市玉米生长发育期降水分布分3个阶段,其中播种至拔节期,降水量偏多,土壤水分能满足玉米生长需求;拔节期至吐丝期,高寒山区降水能够满足玉米生长需求,而黄河沿岸和东部地区降水则偏少,旱地玉米出现干枯和死苗现象;乳熟期至成熟,降水明显增多,但较往年还是偏少,起主要作用的是光照。总体分析,2014年自然降水不利于玉米正常生长。

The precipitation distribution of maize growth stages is divided into three stages during 2014 in Xinzhou. From sowing stage to jointing, the precipitation can meet the needs of maize growth. From the jointing stage to silking, it can meet the needs of maize growth in cold mountainous areas, while it is little along the Yellow River and in east of the is- land. The dead seedlings occurred. From milk-ripe stage to maturity, the precipitation increased markedly, but less than previ- ous years, the main effect is the light. In the overall analysis, precipitation is not conducive to the growth of corn in 2014.