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.
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