A field experiment was conducted to study effects of fertilizer combination on yield, quality and forms of nutrients in leaf of lettuce.
采用田间小区试验研究了不同肥料组合对莴笋产量、品质和叶片养分形态的影响。
Quantitative study on the quantity of nitrogen fertilizer, phosphate fertilizer and potassium fertilizer was conducted through three-element quadric orthogonal whirling combination design.
采用三因素二次正交旋转组合设计对氮、磷、钾肥的用量进行了定量研究。
The applying way of microelements is introduced. The range, usage and dosage of combination of pesticide into fertilizer are also recommended.
同时叙述了补充农作物中微量元素的方式以及药肥合一的使用领域、用法与用量。
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