几种化学除草剂对非耕地主要杂草防除效果的比较

目的]了解除草剂对非耕地杂草的防除效果、使用方法.方法]对65％草甘膦可溶性粉剂、88％草甘膦铵盐可溶性粉剂、80％2甲4氯钠·草甘膦铵盐可溶性粒剂、33％草甘膦·精喹禾灵·乙羧氟草醚可分散油悬浮剂、96％2,4-滴二甲胺盐可溶性粒剂5种除草剂的防除效果进行了对比.结果]65％草甘膦可溶性粉剂、88％草甘膦铵盐可溶性粉剂、80％2甲4氯钠·草甘膦可溶性粒剂、33％草甘膦·精喹禾灵·乙羧氟草醚可分散油悬浮剂对非耕地中单子叶杂草和双子叶杂草如马唐、香附子、苣荬菜、刺儿菜等具有综合防效.96％2,4-滴二甲胺盐可溶性粒剂对单子叶杂草无效,对双子叶杂草具有较好的防效.结论]80％2甲4氯钠·草甘膦可溶性粒剂、88％草甘膦铵盐可溶性粉剂对非耕地中的主要杂草防治效果较好,生产中建议在单子叶杂草7～9叶或阔叶杂草10～12叶时进行茎叶喷雾.

Comparison of the Control Effect of Several Chemical Herbicides on Main Weeds in Non-cultivated Land

Objective] The aim of this study was to understand the control ef- fect and usage of herbicides on weeds in non-cultivated land. Method] The con- trol effect of five herbicides, including 65% glyphosate SP, 88% ammonium glyphosate SP, 80% MCPA-Na. ammoni- um glyphosate SG,33%glyphosate. quiza- lofop-p-ethyl -fluoroglycofen OD and 96% 2,4-D dimethylamine salt SG, was contrasted. Result] 65% glyphosate SP, 88% ammonium glyphosate SP, 80% MCPA-Na .ammonium glyphosate SG and 33% glyphosate .quizalofop-p-ethy- 1- fluoroglycofen OD had comprehensive control effect on monocotyledonous weeds and dicotyledon weeds, such as Digitaria sanguinalis, Cyperus rotundus, Sonchus brachyotus, Cirsium setosum and so on. 96% 2,4-D dimethylamine salt SG had no control effect on mono- cotyledonous weeds, but had good con- trol effect on dicotyledon weeds. Con- clusion] 80% MCPA-Na -ammonium glyphosate SG and 88% ammonium glyphosate SP had better control effect on main weeds in non-cultivated land.h was suggested that the herbicides was sprayed the leaves and stems at the 7-9 leaf stage of monocotyledonous weeds and at the 10-12 leaf stage of dicotyle- don weeds.