蚯蚓粪与牛粪和土相比，能显著促进根系生长，增加新根的生物生长量。
Compare to the cow dung and soil, wormcast can promotion root growth distinctly and increase new roots' quantity.
结果表明，较高的氮素水平促进根系生长，迅速提高水稻根干重， 但同时降低根冠比。
The result is, high N-level can promote the root to grow, but the root cap ratio will comes down.
较充足的水分促进了植物根系的生长， 发达的根系和充足的水分又促进了植物对养分的吸收。
The extra water tends to encourage more root growth and the combination of more roots and more water tends to improve uptake of nutrients.
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