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我区应用“燕麦敌”类土壤处理剂防除麦田野燕麦草,以前多为播后芽前施用,效果一般在80%以上。但我区春季比较干旱,在春早年份遇到比较干旱的土壤和田面坷垃较多的情况下,效果也会降低。为克服这一缺陷,1972年我们做了小区试验,初步看出灌头水前施药,有高效、安全、方法简便等优点。在此基础上,今年又以“燕麦敌1号”为代表,做了不同施药期的药效对比试验,以进一步明确灌头水前施药在我区推广应用的价值。现将试验结果简报如下:
My area application of “oats enemy ” class soil treatment agent to prevent wild oat grass, used to broadcast before the bud before the application, the effect is generally above 80%. However, the spring in our district is relatively arid, and in the early spring, the effect will be weakened when it encounters more severe soil and surface rubbings. In order to overcome this defect, we did a plot test in 1972, and initially we can see that there are advantages of high efficiency, safety and simple method before irrigation. On this basis, this year with “Oats enemies 1 ” as the representative, made a comparison test of the efficacy of different application period, in order to further clarify the value of the application of irrigation before watering in our area. The test results are now briefed as follows: