甘肃有机肥资源分布与利用潜力

Distribution and Utilization of Organic Manure Resources in Gansu

通过调查研究和测定分析,查清了甘肃有机肥资源数量、质量和分布。1999年甘肃省有机肥资源总量为13405.3万t,有机肥利用量5846.43万t,利用率为43.6%,主要品种有人畜粪尿、厩肥、秸秆、堆沤肥、绿肥等,且富含氮、磷、钾养分。有机肥拥有量及N、P2O5、K2O养分含量存在地域间差异。人畜粪尿、作物秸秆、绿肥、饼肥4种肥源贡献N、P2O5、K2O养分总量达到204.36万t,是1999年甘肃省化肥施用量的63.4万t的3.22倍,4种肥源对养分贡献率分别是:人畜粪尿>绿肥>秸秆>饼肥。重视有机肥养分资源的再循环利用,有利于农业的可持续发展。

Through the inquisition and analyze with measurement, check out the quantity, quality and distribution of organic manure in Gansu province. The total amount of organic manure resource was 13 405.3×10~4t in the province, and use amount of organic manure was 5 846.43×10~4t with taking by 43.6% in 1999, the main species is human and animal excrements, manures, crop straws, compost and green manure etc., and enrich to contain the nitrogen, phosphorus and potassium nutrients. It exsits a difference to the taking amount and N, P_2O_5 , K_2O content of organic manures in different regions. The total contributing amount of N, P_2O_5 and K_2O nutrient come to 204.36×10~4t from human-animal feces and urine, crop straws, green manure and seedcakes manure ,which was 3.22 times than the use amount of 63.4×10~4t from chemical fertilizers, four kinds of organic manure sources contributing rate to the nutrient respectively is: human and animal excrements > green manures> crop straws> seedcakes. Paying attention to the recycle utilization of nutrient resources in organic manure, and benefiting to the sustained development of agriculture.