紫花苜蓿除草剂耐药性试验研究

The Test of Herbicide Resistance of Alfalfa

研究除草剂对肇东苜蓿耐药性的影响，可筛选出对苜蓿无药害的除草剂品种和使用方法。通过小区试验，在苜蓿分枝期对各除草剂处理苗情和草情进行观察记载。对苜蓿无药害的药剂处理有75％阔叶散播后苗前喷雾、5％金普施特苗后2～4叶期喷雾、4％金豆苗后2～4叶期喷雾、10％利收苗后2～4叶期喷雾，苜蓿无药害的除草剂品种和使用方法推荐5％金普施特播后苗前和苗后2～4叶期喷雾。

In order to selected the varieties of herbicide which has no phytotoxicity on Zhaodong Alfalfa and their use method, we investigated the herbicide resistance of the influence on Zhaodong Alfalfa. In this experiment, we observed and recorded the effect of herbicide on seeding and grass in Alfalfa tillering stage. Several herbicides had no phytotoxicity on Alfalfa, there were 75% KUOYESAN spraying after seeding, 5% JINPUSHITE spraying after 2 -4 leaves, 4% JINDOU spraying after 2 -4 leaves, 10% LISHOU spraying after 2 - 4 leaves. The result showed 5%JINDOU had more effective than others. The herbicide had no phytotoxicity on Zhaodong Alfalfa was 5% JINDOU. The recommend method is spraying after seeding and after 2-4 leaves.