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近年来,农田草害日益严重,已成为当前影响农业生产的障碍因子。因此,稻田应用化学除草剂,免除耘田、锄草的繁重劳动而受到广大农民的欢迎。稻田化学除草技术已被浙江省列入“七五”期间重点农业技术成果推广项目。鉴于稻田化学除草的施药方法单一,目前仅限于插秧后3～5天施药,因此受时间、天气等因素的影响,致使大面积应用受到一定程度限制。为探索稻田化学除草施药途径,1987年,我们在晚稻大田应用化学除草的基础上进行了插秧前田间使用化学除草技术的试验,进一步来明确不同施药方法对秧苗的安全性、除草效果及产量的
In recent years, the increasingly serious farmland and grass has become the current obstacle to agricultural production. Therefore, the application of chemical herbicides in paddy fields has been greatly welcomed by farmers due to the heavy work of removing fields and weeding. Paddy chemical weeding technology has been included in Zhejiang Province during the “Seventh Five-Year” period key agricultural technology promotion project. In view of the single application of chemical herbicides in paddy fields, the current application of pesticides is only limited to 3 to 5 days after transplanting. Therefore, due to the influence of time and weather, the application of large-scale applications is limited to some extent. In order to explore the way of chemical herbicide application in paddy field, we conducted the experiment of chemical weeding technology before transplanting on the basis of applying chemical weeding in late rice fields in 1987, and further clarified the safety and herbicidal effect of different application methods on seedlings and Yield