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近年来,我们开展了棉田应用草甘膦防除畦边杂草技术的研究工作,达到了除草彻底,且不影响棉花发育、经济效益显著的目的,经全县二万余亩棉田应用,无不良现象发生,现将试验结果整理如下: 一、草甘膦棉田除草效果考查1.草甘膦对棉田主要杂草种类的防除效果:本试验于1985年在立东乡潭头村进行。亩用10%草甘膦水剂0.8斤,于6月20日(晴、微风天气)用常规喷雾法,畦边底层喷雾,亩用药液量75斤,喷药前三点取样,每点划定面积3米~2,调查6种主要杂草数量,作为效果考查基数。当时棉花7～8片真叶,株高25～30厘米,喷后5、10天,分别调查基数杂草的变色、死亡株数、计算死亡、变色率。考查结果,十天死亡、变色率为95.5～100%。
In recent years, we carried out the application of Glyphosate cotton weed control weed edge technology to achieve weeding completely, and does not affect the cotton development, economic benefits significant purpose, the county more than 20,000 acres of cotton field applications, no bad Phenomenon occurred, now the test results are summarized as follows: First, the glyphosate cotton weeding effect test 1. Glyphosate cotton weed species of the control effect: This test was in 1985 Tung Tung Tung Township. Mu with 10% glyphosate agent 0.8 kg, on June 20 (fine, breeze weather) with conventional spray method, the bottom edge of the spray, acres of liquid 75 kg, spraying the first three sampling, each point Determine an area of 3 m ~ 2, the survey of six main weeds, as the basis for the test results. At that time, 7 to 8 true leaves of cotton plants were 25-30 cm in height and were sprayed for 5 and 10 days. The discoloration and the number of deaths of the weeds were investigated, and the death and discoloration rates were calculated. Test results, ten days of death, discoloration rate of 95.5 to 100%.