摘要
通过对免耕玉米田不同除草剂使用方法和用量的研究表明,田间若以禾本科杂草为主可用单剂防治,若禾本科杂草和阔叶杂草混生以使用混剂为好,且采用土壤处理法防效最佳。49.2%烟·乙·莠WP茎叶处理最佳用量为1476～2214ga.i./hm2;63%烟·莠WP最佳用量为756～945ga.i./hm2;施药时期为玉米4～6叶期,杂草2～4叶期。49.2%烟·乙·莠WP土壤处理最佳用量为738～1107ga.i./hm2;48%乙·莠SC用量为1440ga.i./hm2。
According to the researches on the usage of herbicided in zero tillage corn field, the results showed that the single herbicide could be adopted in the field-grown grassy weed. But the mixed herbicide was the best choice in the field-grown grassy and broad leaf weed and the best method was the soil treatment. A 49.2% WP of nicosulfuron＋acetocholr＋atrazine at 1476-2214g a,i,/ha and a 63% WP of nicosulfuron＋atrazine at 756-945 g a.i./ha could probvide the best control by the stem leaf treatment, The best application timing was the 4-6 leaf stage of corn and 2-4 leaf stage of weed, If adopting soil treatment, the best dosage of nicosulfuron＋acetocholr＋atrazine and nicosulfuron＋atrazine were 738-1107g a.i./ha and 1440g a.i,/ha, respectively.
出处
《农药》
CAS
北大核心
2005年第10期475-476,共2页
Agrochemicals
关键词
免耕玉米田
新混剂
最佳用量
zero tillage corn field, new extender, best usage
