黑土肥力和肥料效益定位监测研究 第三报 施肥及种植方式对土壤物理性状的影响

STUDIES ON FERTILITY OF BLACK SOIL AND APPLI CATION OF FERTILIZER Ⅲ.EFFECT OF APPLICATION OF FERTILIZER AND CROPPING SYSTEM ON SOIL PHYSICAL PROPERTIES

摘要:

黑土开垦种植后,土壤肥力呈下降趋势。单施化肥能提高作物产量,但土壤孔隙性、结构性较差。有机肥与化肥配合施用,土壤有机质呈增加趋势,有利于土壤物理环境的改善。玉米与大豆、牧草、绿肥等轮作、间作也有利于物理性状的改善。

Abstract:

Since fresh black soil was cultivated, soil fertility has showed a decreasing trend.
Application of inorganic fertilizer can increase crop yield, but cause some damage tosoil porosity and soil structure. Mixing application of organic and inorganic fertilizer is favorable to increase amount of soil organic matter and to improve soil physical environment. The rotation of corn-soybean, corn-lucerne and intercrop of corn-sweet clover are also helpful to the physical enviromental improvement of soil.