宁夏地区羊草除草剂研究

羊草苗期易受到杂草侵害,妨碍其生长。2012—2013年进行了一年生和两年生羊草除草剂的试验研究,结果表明:在一年生羊草的芽前封闭试验中,苄嘧·唑草酮、湖北地质大学除草剂处理1 m行长内有羊草61株、杂草28株,适合大田使用;咽嘧·莠去津1 m行长内有羊草23株,杂草195株,效果次于苄嘧·唑草酮和湖北地质大学除草剂。对两年生羊草来说,禾本科杂草,苄嘧·唑草酮360 g/hm2除草效果较好,且药效适当,湖北地质大学除草剂药效次之;对于阔叶杂草,2,4-D丁酯750 m L/hm2、烟嘧磺隆1 500 m L/hm2除草效果较好,且对两年生羊草危害较小,只有3%的羊草基部叶片变红。

A Study of Herbicide for in Ningxia Area

is easy to be aggressed by weeds in seedling stage and its growth is inhibited. An experimental study on annual and biennial were 61 plants of herbicide was conducted from 2012 to 2013. The results showed that there and 28 plants of weeds in one meter line treated with the bensulfuron - carfentrazone ethyl and the herbicide made by Hubei Geological University in the before-bud closed test of the annual they are suitable for use in open field. And there were 23 plants of , and 195 plants of weeds in one me-ter line treated with pharyngeal pyrimidine – atrazine and the efficacy was inferior to that of the bensulfuron - carfentra-zone ethyl and the herbicide made by Hubei Geological University. For biennials, the bensulfuron - carfentrazone ethyl of 360 g/hm2 had very good effect on gramineous weeds and the efficacy was appropriate and the efficacy of the herbicide made by Hubei Geological University was the second. For broadleaf weeds, the 2,4-D butyl ester of 750 mL/hm2 and the nicosulfuron of 1 500 mL/hm2 had good weeding effects and do less harm to biennials,and only 3% basal leaves of turn red.