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我们在推广小麦锄划措施中,发现用手扶拖拉机牵引的小麦锄划耙,在机播麦田上进行锄划,因速度较快,有壅土培苗的作用。为此,1978年我们在一块每亩基本苗20万左右、冬前单株分蘖3个以上(包括主茎)的麦田上,进行为锄划培土效果试验。以不培土的为对照,重复两次,小区面积0.01亩,于3月26日、4月9日共锄划培土两次。培土1厘米厚。试验表明,冬小麦在返青至起身期进行两次锄划培土,能有效地提高分蘖成穗率。通过对照的观察:即使是冬前分蘖,也不是全部都能成穗,能成穗的多是冬前三片叶以上的一级蘖。二级蘖成穗的只
In the promotion of wheat hoeing measures, we found that wheat hoes were harrowed by hand-tractors and were hoe-driven at mowed wheat fields. To this end, in 1978 we are in a basic seedlings per acre 200,000 or so, winter before tillering more than three (including the main stem) of the wheat field, for the soil pick-and-draw effect test. To not cultivate the soil as a control, repeated twice, the plot area of 0.01 acres, on March 26, April 9 a total of hoe draw soil twice. Soil 1 cm thick. Experiments show that winter wheat in the greening to the starting period of two hoeing earthwork, can effectively increase the tillering rate. Through the control of the observation: Even before winter tillers, not all can become a spike, can be more than the ear before the winter is more than three leaf tillers. Two tiller panicles only