Xie Chengtao,Li Zhijie,Tian Changyu.The Function of Soil Organic Water on economical Supply in Matter Agriculture[J].Research of Soil and Water Conservation,1996,3(03):42-46.
土壤有机质在节水农业中的作用
- Title:
- The Function of Soil Organic Water on economical Supply in Matter Agriculture
- 摘要:
- 根据在山东禹城试验区多年培肥节水试验证明:土壤有机质具有改善土壤物理性质、增加土壤水分库容、抑制土壤水分蒸发、增加降水入沙、拓宽土壤有效水含量、提高土壤保水供水性能的作用;土壤有机质由7.2g/kg增加到13.2g/kg以上时,土壤水分利用率由1.08～1.68kg/mm提高到1.56～3.11kg/mm,节水30%左右.通过增加土壤有机质可将土壤含水率的灌水下限指标由以往田间持水量的60%～80%降低到55%左右,仍可获得高产,土壤有机质在节水农业中起着重要作用.
- Abstract:
- According to many year’s study on fertilizing soil and economizng water in Yucheng agriculture experiment region of Shandong province,the function of soil organic matter are:(1) improving physical quality of soil,(2) increasing soil water capacity,(3) restractig evaporation of rain,(4)increasing soil permeation of rain,(5)extending content of effective soil moisture,(6) increasing soil quality of preserving moisture arid fertility.As soil organic matter is increased from 7.2g/kg to moer than 13.2g/kg,the rate of soil moisture using increase from 1.08-1.68kg/mm to 1.56-3.11kg/mm.Saving rate of soil moisture is about 30%.By means of improving soil organic matter,the target of relative field moisture content,at which soil must be irrigated and crops grow up well,can be decreased from 60%-80% to about 55%.As said above,soil organic matter have a important function on saving water using in agriculture production.
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备注/Memo
收稿日期:1995-9-10。