Water and nutrient deficiencies are two key factors of limiting the development of dryland agriculture.

水分不足和养分缺乏是制约广大旱农地区农业生产的两个关键因素。

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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。

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