The difference in the response of yield components tofertilizer among rice varietal types was studied.
研究了水稻品种类型间产量构成因素对肥力反应差异。
2
The quota system of competitiveness was established in responseto the characteristic of phosphate fertilizer enterprises, and the mathematic model for quantitative assessment was put forward.
本文根据磷肥企业的特点，建立了其竞争力评价体系，并在此基础上确定了定量分析的模型。
3
The problems concerning biomass, yield, adaptability to environment, responseto chemical fertilizer and after effect of pasture- grain rotation were discussed also in the paper.