摘要
为解决新疆大面积棉花连作田培肥地力问题,于1996～1998 年采用小区定位试验方法,研究了棉籽饼、棉茎秆及与氮磷化肥配施,了解其培肥效果, 以期解决维持和提高连作棉田土壤肥力的办法。结果表明:连续施用棉籽饼+ 棉茎秆+ 氮磷化肥配施能增加土壤有机质、全氮、全磷含量,提高土壤中有效态氮磷钾的供应强度, 尤其是土壤速效磷提高较快,应注意调整氮磷比值;单施氮磷化肥,可以较快增加土壤速效磷含量,有效态氮含量在短期内却难以提高, 还会使土壤速效钾每年以8 m g/kg～9 m g/kg 的速度递减,应补施化学钾肥;连续施用棉籽饼、棉茎秆及化肥配施对土壤酶活性、土壤容重、饱和含水量、总孔隙度等物理性质也有良好的改善和提高作用。
Position tests were made in several plots from 1996~1998 to find out the fertilization effect of application of cotton seed manure, cotton stalk together with combined application of nitrogen and phosphorous fertilizers. The result showed that continuous application of cotton seed manure + cotton stalk + combined application of nitrogen and phosphorous fertilizers; could increase the content of organisms, total nitrogen and total phosphorous in soil and strengthen the supplying capacity of effective nitrogen, phosphorous and potassium in soil; while only applying nitrogen and phosphorous fertilizers; could increase rapidly the content of effective phosphorous in soil, but could not increase the content of effective nitrogen, and at the same time it caused a decrease of the content of quick acting potassium in soil by 8 mg/kg^9 mg/kg per year; then the continuous application of cotton seed manure and cotton stalk together with combined application of chemical fertilizers could improve chemical properties of soil, such as enzymatic activity, unit weight, saturated water content, total porosity and etc.
出处
《干旱地区农业研究》
CSCD
北大核心
1999年第4期16-21,共6页
Agricultural Research in the Arid Areas
基金
国家重点科技攻关项目
关键词
棉籽饼
棉茎秆
氮磷化肥
培肥效应
土壤肥料
cotton seed manure
cotton stalk
nitrogen and phosphorous fertilizers
fertilization effect
