但施肥能明显提高土壤有效养分含量。
Fertilization can increase the contents of soil available nutrients.
应用现代地统计学和地理信息技术在上海崇明岛研究了规模经营的农场土壤有效养分含量与作物产量的空间变异规律；
Spatial variability of soil nutrient and crop yield in Shanghai Chongming Island large-scale management farm was studied by modern geo-statistical and geographic information technology.
这与SC27促进土壤养分有效化，提高植株叶片中氮、蛋白质、糖和淀粉含量有关。
SC27 could improve available nutrient contents in soil and increase the contents of nitrogen, protein, sugar and starch in leaves of watermelon and balsam pear plants.
高度风化的酸性红壤，受亚热带气候及不合理利用影响，土壤养分含量偏低，尤其是土壤磷素的含量及有效性也很低。
Influenced by the subtropical climate and unreasonable use in deeply weathering red soils, the nutrient content is lower, especially the validity of phosphorus.
以广西弄拉峰丛山区为例探讨岩溶区偏碱性条件下土壤有机质与有效态养分含量之间的相关关系。
Taking a typical karst mountain area, Nongla in Guangxi as an example, the correlation between soil organic matter and the content of available nutrients in selected soils was discussed in this paper.
结果表明土壤有机质可显著影响有效态养分含量。
The results showed that soil organic matter under alkaline soil condition may affect remarkably the content of available nutrients.
土壤中有效硼与果实中可滴定酸呈显著负相关，其他养分含量与果实品质因素间没有显著相关性；
The available-B of soil had negative with TSS in fruit, and other nutrition had no significant correlation with fruit quality.
土壤中有效硼与果实中可滴定酸呈显著负相关，其他养分含量与果实品质因素间没有显著相关性；
The available-B of soil had negative with TSS in fruit, and other nutrition had no significant correlation with fruit quality.
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