Establishment of organic production system with resource-saving and greenhouse gas-reduction by cover cropping

连续施用覆盖作物增加了土壤碳，激活了土壤中重要的酶。种植覆盖作物会释放温室气体（GHG），而免耕则会抑制温室气体的释放。施用禾草覆盖作物后，土壤真菌数量增加，形成水稳性团聚体。豆科覆盖作物叶茅腐解后菌根真菌大量繁殖，支持植物对磷的吸收。豆科覆盖作物分解释放的大量氮可用于后续作物。覆盖作物是有机农业减少温室气体排放的重要手段。

Continuous application of cover crops increased soil carbon and activated important enzymes in soil. GHG (Greenhouse gas) was released when cover crops were incorporated, however it was inhibited by no-till cultivation. Fungi increased and water-stable aggregate was formed in the soil with application of gramineous cover crops. Mycorrhizal fungi were proliferated after decomposition of hairy vetch, one of legume cover crops, and supported phosphorus uptake into plant. Much amounts of N released by decomposition of legume cover crops were used for subsequent crops. Cover crops are important tool of organic agriculture with reduction of GHG.