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黑龙江省各级农业研究部门和国营农场、人民公社近年来为了提高小麦单位面积产量,查明各种肥料的增产实效,以及土壤对各种肥料的反应,寻求合理施肥方法,提高施肥的增产作用,作了很多试验,积累了很多资料。我们为了向生产上介绍这些成果,并作为进一步研究小麦经济施肥的基础,将省、专、市、县11处农业研究部门最近五年(1957—1961)来的21份试验总结加以整理和分析,又把人民公社和国营农场的生产试验总结18份作为验证材料,整理如下。但由于我们的水平所限,以及材料本身的基础、条件、方法各有不同,许多问题还有待于今后的研究确定。 1.各种肥料在全省范围的增产实效:全省氮素肥
In recent years, Heilongjiang Province agricultural research departments at all levels and the state-owned farms, people’s communes in recent years in order to improve the yield per unit area of wheat, to identify the effect of various fertilizers yield and soil response to various fertilizers, to seek a reasonable fertilization method to increase fertilizer production , Made a lot of experiments, accumulated a lot of information. In order to introduce these achievements into production, and as a basis for further research on economic fertilization of wheat, we summarized and analyzed 21 trial summaries from 11 agricultural research departments of provinces, prefectures, cities and counties in the recent five years (1957-1961) , And the people’s communes and state-owned farms 18 production test summary as verification materials, sorted as follows. However, due to our limited level, as well as the materials themselves, the conditions and methods vary, many problems need to be determined in future studies. 1. A variety of fertilizers in the province to increase production efficiency: the province’s nitrogen fertilizer