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为了探求春小麦高产稳产的需肥规律及土壤的供肥特点,摸索春小麦土壤与植株的营养指标,为看苗看地经济合理施肥提供依据,我组于一九七六年至一九七八年连续三年,在学校试验农场并与部分县、社及国营农场协作,开展了春小麦营养诊断的研究工作,定田、定期对土壤和植株的氮磷养分进行系统诊断观察,以查明土壤和植株的营养动态变化,施用化肥对土壤供肥水平的调节,土壤供肥水平对小麦养分吸收和生长发育的影响,初步拟定出高产春小麦土壤及作物营养参考指标,暂行试用,再经今后实践的检验,不断补充和修改,以期提出我区高产春小麦土壤与作物的诊断指标。现以我院实验农场为主,结合部分社队及国营农场的诊断资料,初步总结如下。
In order to explore the law of high and stable spring wheat needs fertilizer and soil for fertilizer characteristics, to explore the spring wheat soil and plant nutrition indicators, to see Miao to provide economic and reasonable fertilization provide basis for my group in 1976 to 1978 For three consecutive years, in the experimental farm and in collaboration with some counties, communities and state-owned farms, the research work on spring wheat nutrition diagnosis was carried out. The soil and plant N and P nutrients were regularly diagnosed systematically to determine the soil and The dynamic changes of plant nutrition, the application of chemical fertilizers on soil fertilization levels, soil nutrient levels on wheat nutrient absorption and growth and development, initially developed high yield spring wheat soil and crop nutrition reference indicators, tentative trial, and then by the practice Testing, constantly added and modified, in order to put forward the diagnosis of high yield spring wheat soil and crop indicators. The main experimental farm in our hospital is now based on the diagnostic information of some of the communes and state-owned farms. The preliminary conclusions are as follows.