甘肃有机肥资源分布与利用潜力

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13 405.3万t,有机肥利用量5 846.43万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.

Distribution and Utilization of Organic Manure Resources in Gansu

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 13 405.3×10⁴t in the province,and use amount of organic manure was 5 846.43×10⁴t 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,P₂O₅,K₂O content of organic manures in different regions.The total contributing amount of N,P₂O₅ and K₂O nutrient come to 204.36×10⁴t from human-animal feces and urine,crop straws,green manure and seedcakes manure,which was 3.22 times than the use amount of 63.4×10⁴t 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.