In a word, we conclude that (1) : the soil fertility level was greatly influenced by the Long-term local addition of fertilizer, especially by the farmyard manure.
总之，我们可以得出以下结论：(1)：长期不同施肥对土壤肥力水平影响很大，尤其是长期施加厩肥。
From the point of view of soil comprehensive fertility and considering the dependence of crops on the fertility factors, the results of quantitative study of the soil fertility level are shown.
从综合肥力的观点出发，结合作物对各肥力因素的依赖程度，对土壤肥力水平进行了定量研究。
The experiment assumed two kinds of the rice soil of different fertility level.
试验是采用肥力水平不同的两种水稻土进行。
Soil microaggregates can influence the soil physical, chemical and biological properties and may be used as an overall index for evaluating the fertility level of soil.
土壤微团聚体具有影响土壤理化生物性质多方面的作用，可能作为评价土壤肥力水平的综合指标。
Results showed that the Integrated Fertility Index (IFI) of orchard soil in red earth regions of Guangxi were between 0.17 to 0.25 and belong to mid-low level.
结果表明，广西红壤果园土壤肥力综合指标值(ifi)在0 17 ~ 0 25之间，果园土壤肥力属中下水平。
It is a possible that the study of total soil enzyme activity appraise the level of soil fertility.
用酶活性的总体进行土壤肥力水平评价的可能性。
According to the classification criterion of soil nutrient, the soil fertility in this area is at a middle level.
按照土壤养分含量分级标准其土壤肥力属中等水平。
Organic matter is a very important part of soil. The level of content is one of the key indicators to measure soil fertility.
有机质是土壤的重要组成成分，其含量水平是衡量土壤肥力的重要指标之一。
The results show that this new method is an effective one which can be used for comprehensively evaluating the level of soil fertility and establishing soil fertility grades.
结果表明，灰色关联分析是综合评价土壤肥力状况及肥力等级划分的一种有效方法。
In the mean time, we also analysed changing laws of Lou soil? S physical properties in heavy loam soil region under different fertility level.
同时，还着重分析了重壤带的土娄土在不同肥力水平下其物理性质的变化规律。
The destruction of soil, At present, there are 110 countries where the arable land's fertility level is lowering.
土壤遭到破坏目前，有110个国家的可耕地的肥活程度在降低。
The destruction of soil, At present, there are 110 countries where the arable land's fertility level is lowering.
土壤遭到破坏目前，有110个国家的可耕地的肥活程度在降低。
应用推荐