The objectives of this dissertation research were to compare the influences of different organic management practices on 1) soil microbial biomass, activity and plant available soil nutrients;
本论文的主要研究目标是：1）不同有机肥管理措施下土壤微生物及生物化学性质的变化；
The Centre also maintains a national repository of potato gene resources and conducts research on soil management and conservation.
该中心还是国家马铃薯基因资源保藏库，并致力于土壤管理和保护的研究工作。
Research on soil moisture movement of drip irrigation, is the right design system and the premise and basis of field crops to high water management.
滴灌条件下土壤水分运移规律的试验研究，是正确设计滴灌系统和对田间作物水分进行精准管理的前提和基础。
Research on soil moisture movement of drip irrigation, is the right design system and the premise and basis of field crops to high water management.
滴灌条件下土壤水分运移规律的试验研究，是正确设计滴灌系统和对田间作物水分进行精准管理的前提和基础。
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