%0 Journal Article
%T Recycling rate of N and P through a feeding-composting cycle and their recoveries in agro-ecosystems<br>氮和磷在饲养-堆腐环中的循环率及有机肥料养分利用率
%A YU Wantai~
%A GUAN Yan~
%A <br>宇万太
%A 关焱 李建东
%A 张璐 马强
%J 应用生态学报
%D 2005
%I 
%X A five-year experiment indicated that the average loss rate of N and P in harvested products through a feeding-composting cycle was about 50% and 15%,respectively.Under high yield condition,the amount of recycled N and P from 80% harvested products and through a feeding-composting cycle in farming systems was about 3751 and 814 kghm~(-2),equivalent to 25%34% of N and 32%56% of P from chemical fertilizers applied each year to the systems.The apparent recoveries of N and P in organic manure increased with the prolongation of fertilization,indicating a synergetic residual effect existed,and was 61% and 39% in average in the five-year experiment.The use of nutrients recycled in the farming systems could not only improve soil fertility,but also increase the recoveries of nutrients and reduce the use of chemical fertilizers.
%K Feeding-composting system
%K Recycling rate
%K Recoveries of N and P in organic manure<br>氮
%K 磷
%K 饲养-堆腐环
%K 循环率
%K 有机肥
%K 养分利用率
%K 农业生态系统
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=ACF3B0574DCE7CA8&yid=2DD7160C83D0ACED&vid=7801E6FC5AE9020C&iid=5D311CA918CA9A03&sid=3F0F3A1477A0E1FE&eid=CA107AA458C36D25&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=0&reference_num=21