The results in this study recommed that the length and gradient of the slope should be considered in the soil nutrients management on sloping land.
因此，在坡地土壤养分调控中必须综合考虑坡度和坡长因素。
An investigation of nutrients management on mulberry was carried out including 44 mulberry orchards distributed in main product area in Hubei province.
对湖北省蚕桑主产区44个有代表性的桑园养分管理现状进行了调查。
In Africa, where many soils have become badly depleted of nutrients, better fertiliser management would go a long way.
在非洲，有大量的土地已经耗尽了养分，因而更需要长期经过良好管理的施肥。
Geostatistics; GIS; Soil nutrients; Spatial variability; Regionalized management; Microelements.
地统计学；GIS；土壤养分；空间变异；分区管理；微量元素。
Optimum management of the cycle of soil organic matter and nutrients has important roles for developing sustainable agriculture and promoting environmental safety.
土壤有机质和养分循环与优化管理对农业和环境具有重要意义。
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；
It was shown the management zones had good space continuity. Besides, the soil nutrients and cotton yield had significant differences in sub-districts.
结果表明，分区不但具有很好的空间连续性，而且不同分区内土壤的理化特性及棉花产量数据之间也存在着显著差异。
It was shown the management zones had good space continuity. Besides, the soil nutrients and cotton yield had significant differences in sub-districts.
结果表明，分区不但具有很好的空间连续性，而且不同分区内土壤的理化特性及棉花产量数据之间也存在着显著差异。
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