绿肥对粘质淤土及其复合胶体性质的影响

EFFECT OF GREEN MANURE ON THE PROPERTIES OF COLLOIDAL COMPLEXES OF CLAYEY WARP SOIL

摘要:

在我国黄淮平原地区,分布有大面积粘质淤土.这类土壤底子虽好,但缺少有机质,土质粘重,板实,耕性差,适耕期短,容易跑墒,产量较低,土壤潜在肥力不易充分发挥.大力发展绿肥是解决有机肥源和改良土壤性质,夺取粮食大面积稳产高产的重要途径,是用地养地的好方法,是快速改良粘质淤土的有效措施.

Abstract:

It is generally known that in order to make the stiff clay gradually become chessom,we can make use of green manure to bring into practice the reclamation of physico-chemical properties of soil,the decrease of bulk density and resistance to compression of soil and the increase of porosity,moisture capacity and aggregation of soil. In addition,application of green manure evidently accumulates some additional organic matter and nitrogen contained in the soil.It should be noted that the response of rice productivity on mixed cropping of vetch-rye grass used as green manure is much better than vetch alone.