黑土区农业系统投料中有机碳、磷和氮在饲养——堆腐过程中的循环率

Circulation Ratio of Organic Carbon,Phosphorous and Nitrogen in Feeding-heaping Process of Agricultural System in Black Soil

根据中国科学院和国家科技部分布于四大类型地区的生态站进行的长期施肥及养分循环再利用的作物产量、土壤肥力质量变化研究数据 ,提出了黑土区农业系统投料中有机碳和磷。

According to the daga of crops yield and soil fertility changes of long term application of fertilizer and nutrients recycling obtained from ecological stations scatrtered in four typical areas under Chinese Academy of Sciences and State Minisetry of Science and Technology,the circulation ratios of organic carbon,phosphorus and nitrogen in the process of feeding-composting in were put forward in the agricultural system of black soi area,the ratios were about 0.3,0.61 and 0.49,respectively.