limiting factors of soil nutrient 养分限制因子
Limiting factors of soil fertility 土壤肥力限制因素
limiting factors of soil nutrients 土壤养分限制因子
High rainfall variety and poor management of soil and water are the most important and limiting factors in crop system in this region.
年度降雨分布的极度不均和落后的土壤及水分管理措施是制约该地区农田生产力的主要因素。
According as the systematic approach for soil nutrient status, the nutrients limiting factors of the young oil-tea soil in Yichun of Jiangxi were studied.
利用土壤养分状况系统研究法，对江西宜春油茶幼林土壤进行了养分限制因子的研究。
In Huaibei area the unsuitable application of wheat variety, bad climate soil conditions, lower fertility and extensive cultivation were major limiting factors for high wheat yield in large areas.
对近几年淮北小麦生产现状的分析表明，小麦品种使用不当、不良气候、土壤肥力偏低以及栽培粗放是当前淮北小麦大面积生产存在的主要问题。
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