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过去生产上一般认为化肥要早施,高产麦田要重施起身拔节肥,对后期追施穗粒肥(指小麦挑旗期前后的追肥)确有些顾虑,担心小麦会贪青晚熟,易倒伏,造成减产。我们针对这个问题,于1976—1978年在所内外进行过28处田间试验和大田示范。结果都证实,小麦高产地块种植烟农685、泰山1号等大穗大粒型品种,后期追施穗粒肥均获得一定增产效果。如1978年在全地区23处试验结果,在土壤较肥、亩施土粪万斤左右的情况下,
In the past, it was generally thought that the chemical fertilizers should be applied as early as possible and the high-yield wheat fields should be rebuilt to get out of the stubble. There are some concerns about the top-dressing of grain spikes (wheat top dressing before and after wheat picking) in the late stage. Cut In response to this question, we conducted 28 field trials and field demonstrations both in and outside 1976-1978. The results confirmed that the high yield plots of wheat planting Yannong 685, Taishan No. 1 and other big ears and large grain varieties, the late topdressing spike fertilizer have a certain yield increase. For example, in 1978, the test results of 23 places in the whole region showed that when the soil is fatter and the mu soil is about one hundred thousand kilograms,