春玉米化学除草剂药害的发生原因及其预防和缓解技术措施

Reasons of Phytotoxicity of Chemical Herbicide in Spring Maize Fields and Its Technique Measures of Prevention and Mitigation

在河北省隆化县,玉米田化学除草剂药害发生程度逐渐加重、面积逐年加大,严重影响了玉米生产。分析了造成玉米田化学除草剂药害的主要原因,并提出了合理适期选用化学除草剂、注意天气情况、提高喷药技术,运用农业技术并辅助喷洒植物生长调节剂等措施,可以预防和缓解药害的发生。

The occurrence degree of chemical herbicide phytotoxicity in maize fields in Longhua County of Hebei Province was gradually increased and the occurrence area was enlarged year by year , which seriously affected the production of maize.In the paper, the main causes of chemical herbicide phytotoxicity in maize fields was analyzed, and the measures such as proper selection of chemical herbicides, paying attention to the weather condition, improving the spraying technology, application of agricultural technology and assisted spraying plant growth regulator were proposed to prevent and mitigate the phytotoxicity.