A field experiment was conducted to study effects of fertilizercombination 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。
2
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。
3
The applying way of microelements is introduced. The range, usage and dosage of combination of pesticide into fertilizer are also recommended.