chemical analysis of soil 土壤化学分析
The relationship between incidence of fusarium wilt in chilly and the amount and preparation of N. P. K fertilizer was studied on the bases of soil chemical analysis.
在土壤化学分析的基础上研究分析用不同n、P、K配方施肥与辣椒枯萎病发生的关系。
The results of physical and chemical analysis of soil samples showed that the diameter changing point of soil particles caused by soil erosion is about 0.
通过小区采样并进行了机械组成和化学分析，认为侵蚀过程导致的土壤颗粒坡面分布变化点在0 。
Through field investigation and chemical analysis, the reasons why soil ecological environment deteriorated on facility farmland were studied.
采用调查研究与化学分析相结合的方法，对设施农田土壤生态环境恶化的原因进行了初步研究。
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