单词npk
网络: 复合肥；氮磷钾；氮磷钾肥
Sulphur is one of the essential elements of tea plant and regarded as the fourth key element next to NPK.
硫是茶树必需的营养元素之一，被称为仅次于NPK的第四要素。
With application of NPK, the net income per hectare for the dry-land crops was significantly higher than for the rice.
甘薯、马铃薯或花生施用氮磷钾的每公顷净增收和产投比都明显高于水稻。
The relation among product of flax and different, density amount of nitrogen, NPK ratio was studied.
研究了不同播种密度、不同N肥用量及不同NPK比例与亚麻产量的关系。
Effects of different NPK proportion on growth, yield and quality of Wuta-cai in middling soil fertility were studied.
研究了在中等土壤肥力水平下不同NPK配比对乌塌菜生长及产量品、质的影响。
SOC in paddy-upland rotation was almost steady in 6 years, but was lower than initial value in NPK and CK treatments.
水旱轮作地各处理土壤有机碳6年内基本保持稳定，但NPK和CK处理均低于初始值；
NPK and NP fertilizers could balance soil fertility and increase crop yields, the effects were the same and next to MNPK.
试验结果表明：有机、无机肥配合施用是快速修复土壤养分和提高生产力的最佳方法；
Quality of soils - Terminology of NPK fertilization.
土壤的质量.NPK施肥的术语
The loss rate of NPK is 8. 71%, and is Minimum.
氮磷钾配施处理氮素损失率最低，为8.
Study of the Commercial Test of the Comprehensive Utilization of Phosphogypsum for Production of High Concentration NPK Compound Fertilizer
磷石膏综合利用制高浓度NPK复肥工业试验研究
The Anticorrosion Protection Technology for Sulphurate NPK Complex-fertilizer Transforming Installation
硫基NPK复合肥转化装置的腐蚀防护技术