The models were proved by large area fertilizer field experiments for rice to have a good accuracy and sensitivity.
水稻大面积施肥试验证明了该施肥模型有较高的准确性和敏感性。
Relevant essential factors in the production of an encapsulated grain fertilizer (similar to seed manure) are ascertained through formulation, field test and laboratory experiments.
通过配方设计、田间试验、实验室试验确定了包裹型玉米口肥（类似于种肥）生产的相关要素。
In this study, the influences of different nitrogen fertilizer variety, nitrogen level and basal manure on nitrate accumulation and quality of cabbage were investigated in field experiments.
本文在田间试验条件下探讨了氮肥品种、用量及不同基肥种类对包心菜硝酸盐累积及品质的影响。
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