Polymers sk 4 could well affect soil water supply and moisture holding capacity at a fraction of 5 10 -3 . However, exorbitant concentration of polymers did not improve water supply capacity of soil. By contrast to, will compote water with plant.

 
  • 保水劑sk 4在w =5× 10 -3 即能達到較理想的保水和供水效果 ;濃度過(guò)高僅僅增加土壤殘余含水量 .
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan