A study was conducted to evaluate the soil nutrient status of poplar plantations by soil nutrient Systematic Approach (SNSA) in Jianghan Plain, Hubei Province.
应用土壤养分状况系统研究法(SNSA法)对江汉平原杨树人工林土壤养分状况进行了评价。
The main soil nutrients of affecting wheat yield is P>K>B by the systematic approach for determining nutrient contents of the yellow soil in Tongren prefecture.
通过土壤养分系统研究法，诊断出贵州省铜仁地区松桃县黄泥土影响小麦产量的主要限制因子排列为：P>K>B。
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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