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在同一类型土壤上按同样方案(例如在固定1、2种磷、钾的基础上改变施氮量)所进行的多次豌豆试验中,曾得出过与给豆类作物施无机氮合理性相矛盾的结论。其原因首先在于决定产量的多种因素作用及其互作的极端复杂性。对于豆类作物,在其产量因素中还增加了一个固氮作用,而固氮效应本身又决定于植株营养条件和气候条件。因此,豆类作物营养规律研究在目前仍不失其现实意义。尤其是
In several pea trials on the same type of soil with the same protocol (for example, changing the amount of nitrogen application on the basis of 1, 2 phosphorus and potassium fixations), it has been concluded that the application of inorganic nitrogen to legumes Contradictory conclusion. The reason lies primarily in the multiple factors that determine yield and the extreme complexity of their interactions. For leguminous crops, a nitrogen fixation effect is also added to its yield factors, and the nitrogen fixation effect itself is determined by the vegetative and climatic conditions of the plants. Therefore, the research on nutrition law of leguminous crops still has its realistic significance at present. especially