摘要
通过调查武汉市畜禽养殖粪便、作物秸秆和绿肥资源的总量、分布以及目前利用的现状,量化分析相应区域有机资源利用情况,以此为基础衡量武汉市有机钾(K2O)资源总量及其利用现状,总结有机钾资源利用中存在的问题,并提出建议。结果表明,武汉市畜禽粪便、秸秆及绿肥中有机钾资源年产总量约为115 027 t,其中,畜禽粪便中有机钾总量为60 796 t,占有机钾年产量的52.85%;秸秆中有机钾总量为49 657 t,占有机钾年产量的43.17%,绿肥中有机钾总量为4 574 t,仅占有机钾年产量的3.98%。畜禽粪便48.44%直接施入田中,21.74%喂鱼,14.39%做沼气利用,仅17.28%做有机肥;农作物秸秆有60.68%被农民焚烧或是闲置,仅有13.98%还田。现有利用方式造成有机钾资源的严重浪费,应改变现有利用方式,提高有机钾肥的利用率。
Based on the investigation of the total resources, distribution and current situation of livestock and poultry manure, crop stalks and green manure resources in Wuhan, the quantitative analysis of the utilization of organic resources in the cor-responding areas was carried out. Based on this, the organic potassium resources （K2O） and their utilization status in Wuhan were measured, the problems of organic potassium resources utilization were summarized and suggestions were put forward. The results showed that the total annual output of organic potassium in manure, straw and green manure in Wuhan was about 115 027 tons. Among them,the total organic potassium in livestock and poultry manure was 60 797 tons,accounting for the annual output of organic potassium 52.86%,the total amount of organic potassium in straw was 49 657 tons, accounting for 43.17% of annual organic potassium production, the total amount of organic potassium in green manure was 4 574 tons, ac-counting for 3.98% of annual organic potassium production. 48.44% of annual production of livestock and poultr^^ manure was directly returned into field, 21.74% was used for feeding fish, 14.39% was done to biogas, and only 17.28% was used as organic fertilizer. 60.68% of the crop straw produced per year was burned by farmers or idle, and the amount of straw re-turned was only 13.98%. The existing using ways of potassium resources lead to a serious waste, so these ways should be changed to improve the utilization of organic potash fertilizer.
出处
《湖北农业科学》
2017年第21期4027-4030,共4页
Hubei Agricultural Sciences
基金
公益性行业(农业)科研专项(201203013)
武汉市农业科学院集成创新项目(CX201604)
关键词
有机钾资源
作物秸秆
畜禽粪便
钾利用率
potassium resources
crop straw
animal dung
potassium utilization rate
