hillyregion相关论文
The primary studies on the complex benefit of forest-fruit-grass-fish ecosystem in hilly region,hesh
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目的 观察并比较无色和黑色塑料地膜覆盖法在丘陵山区的灭螺效果.方法 选择钉螺密度较高的山区环境,设无色地膜、黑色地膜和未覆盖......
