The major hazards to water logging and its correlativity with the yield of single-season rice were analyzed in this paper.

　
英 美
  • 摘要對安徽省一季稻澇災的主要致災因子及其與一季稻產(chǎn)量的關(guān)系進(jìn)行了分析。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan