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Through field plot experiment to research the optimum nitrogen content of rice proprietary formula fertilizer.
通过田间小区试验对水稻专用配方肥最佳含氮量进行了研究。
Several Suggestions on specialty fertilizer formula, nutrient concentration of compound fertilizer, and terms in national standard are presented from agronomy viewpoint.
对专用肥配方、复混肥的浓度、复混肥标准的一些规定从农艺角度提出一些意见。
The soil obstacle factor, the critical values of some nutrients and the supply intensity, as well as fertilizer efficiency should be paid more attention in formula fertilization by soil testing.
测土配方施肥中，还应注意：土壤障碍因子、某种元素临界法与供应强度，肥料利用率等问题。
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