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我所位于宣化城西,圃地属洋河北岸滩地类型,杂草茂密,种类繁多,每平方米就有杂草300株左右,高的达半米多。每年每亩仅除草工就要六、七个。为了消灭草荒,节省劳力,减轻劳动强度,降低育苗成本,1982年我们进行了苗圃化学除草试验。为了进行多因子试验,为生产提供更多更可靠的信息,6月初用宣化市场现有的除草剂设计了正交试验,现将试验情况及结果报告如下:
Located in the west of Xuanhua City, our garden belongs to the type of beach in the north bank of the Yanghe River. Weeds are densely populated and have a great variety of weeds. There are about 300 weeds per square meter, with a height of more than half a meter. Only six or seven weeding workers per mu per year. In order to eliminate the shortage of grass, save labor, reduce labor intensity and reduce the cost of raising nursery, we conducted a nursery chemical weeding test in 1982. In order to carry out multifactorial experiments and provide more and more reliable information for production, an orthogonal experiment was designed with the existing herbicides in Xuanhua Market in early June. The test results and the results are reported as follows: