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取代脲类除草剂绿麦隆在我省麦田推广应用已近10年,对控制看麦娘的危害起了一定作用。但绿麦隆对土壤湿度要求较高,年度间的防效不够稳定。全省不少地区由于连年使用,结果看麦娘的种群下降,而对绿麦隆有一定程度耐药性的日本看麦娘上升为优势种。此外,绿麦隆降解速度慢,在土壤中有残留,后茬水稻分蘖期间遇持续高温,常发生不同程度药害。因此,必须研制、生产对
Replace the urea herbicide chloroplast in the province to promote the application of wheat fields for nearly 10 years, the control of the harm to see Ameng played a role. However, Chlormequat requires high soil moisture and the control effect is not stable enough during the year. As a result of successive years of use in many areas in the province, the population of Ophiopogon japonicus declined as a result. However, Japan’s Ophiopogon japonicus, which had a certain degree of resistance to chlorotoluron, rose to the dominant species. In addition, the degradation rate of chlorotoluron slow, there are residues in the soil, after continuous tillering of rice in case of continued high temperatures, often varying degrees of phytotoxicity. Therefore, we must develop, produce right