进入冬季后,作物和杂草的生长都比较缓慢,但相对而言,杂草的生长速度和生长量比作物要快要大些。因此,对冬种作物实行化学除草是十分必要的。但冬季低温时使用除草剂,往往效果不及夏秋温度高的季节那么明显,有时在短期内看不出效果,其主要原因是由于低温条件下除草剂的药效释放 After entering the winter, crops and weeds grow more slowly, but relatively speaking, weeds grow faster and grow faster than crops. Therefore, the implementation of chemical weed control of winter crops is very necessary. However, the use of herbicides at low temperatures in winter tends to be less effective than those at high summer and autumn temperatures. Sometimes the effect can not be seen in the short term, mainly due to the release of the herbicides under low temperature conditions