CAJ | 학술논문

为筛选出适合甘肃省肃南牧区栽培草地主要杂草防除的除草剂,以栽培草地播前和苗后2个时期为试验地,选择2,4-滴丁酯乳油,40%磺草-莠去津和30%草甘膦水剂3种除草剂,开展5个不同剂量处理下的杂草防除试验。结果表明：栽培草地播前,30%草甘膦有效成分剂量为1.65 L/hm2时,对赖草防除效果达到了94.68%,同时对栽培草地的发芽和出苗都没有影响,是比较理想的播前除草剂。苗后2,4-滴丁酯乳油有效成分剂量为3.60 L/hm2时对以大蓟、叶蒿和藜为优势杂草的栽培草地防效较好,防效分别达78.92%,85.08%和95.83%。
위사선출괄합감숙성숙남목구재배초지주요잡초방제적제초제,이재배초지파전화묘후2개시기위시험지,선택2,4-적정지유유,40%광초-유거진화30%초감련수제3충제초제,개전5개불동제량처리하적잡초방제시험。결과표명：재배초지파전,30%초감련유효성분제량위1.65 L/hm2시,대뢰초방제효과체도료94.68%,동시대재배초지적발아화출묘도몰유영향,시비교이상적파전제초제。묘후2,4-적정지유유유효성분제량위3.60 L/hm2시대이대계、협호화려위우세잡초적재배초지방효교호,방효분별체78.92%,85.08%화95.83%。
In order to screen out the suitable herbicides for controlling the main weeds in sowed pasture in Sunan,Gansu Province,3 herbicides (2,4-D butyl ester,atrazine and glyphosate)were selected with 5 doses to test the efficiency.The results showed that the best control efficiency (94.68%)could be reached with 1.65 L/ha dose of glyphosate to treat the soil before sowing and forage germination and growth were not affected,so it was the ideal one.After seedling stage,2,4-D butyl ester showed a satisfied control efficiency to Cirsium j a-ponicum ,Artemisia leucophylla and Ceratoides spp.with dose of 3.60 L/ha and the control rates were 78.92%,85.08% and 95.83%.