南方地区秸秆还田对土壤综合肥力和作物产量的影响

应用生态学报 ›› 2012, Vol. 23 ›› Issue (11): 3040-3944.

南方地区秸秆还田对土壤综合肥力和作物产量的影响

杨帆^1**,董燕¹,徐明岗²,包耀贤²

(¹全国农业技术推广服务中心，北京 100125； ²中国农业科学院农业资源与农业区划研究所农业部作物营养与施肥重点开放实验室，北京 100081)

出版日期:2012-11-18 发布日期:2012-11-18

Effects of straw returning on the integrated soil fertility and crop yield in southern China.

YANG Fan¹, DONG Yan¹, XU Ming-gang², BAO Yao-xian²

(¹National Agricultural Technology Extension and Service Center, Beijing 100125, China; ²Ministry of Agriculture Key Laboratory of Crop Nutrition and Fertilization, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China)

Online:2012-11-18 Published:2012-11-18

摘要/Abstract

摘要： 以安徽、江西、湖南、湖北、四川、重庆、广西等省94个秸秆还田定位试验为基础，运用数值化理论综合评价我国南方地区秸秆还田的土壤肥力变化和培肥增产效应.结果表明：研究区土壤肥力综合指数(SFI)和作物产量具有明显的区域差异，但SFI整体以中等水平的三等地(该等级土地面积占研究区土地面积的69.1%)和较低水平的四等地(占21.3%)为主；秸秆还田后，SFI和产量较秸秆不还田平均提高了6.8%和4.4%；水稻产量与SFI之间呈极显著正相关.SFI可真实反映研究区土壤肥力综合水平.在当前农艺水平下，秸秆还田是有效提高我国南方地区土壤综合肥力的重要举措，应大面积推广秸秆还田腐熟.

Abstract: Based on the data from 94 experiments of straw returning in Anhui, Jiangxi, Hunan, Hubei, Guangxi, Sichuan, and Chongqing, and by using mathematic modeling approach, this paper evaluated the effects of straw returning on the soil fertility and crop yield in southern China. Obvious regional differences were observed in the soil fertility index (SFI) and crop yield response. In study area, the croplands with the SFI of Grade III and Grade IV were predominant, occupying 69.1% and 21.3% of the total, respectively. Averagely, straw returning increased the SFI and crop yield by 6.8% and 4.4%, respectively, as compared with the control (no straw returning). The SFI was significantly linearly correlated with rice yield, and could well reflect the integrated soil fertility in study area. At present, straw returning with decomposing agent added is one of the most important measures to improve the integrated soil fertility in southern China, which should be widely popularized.

杨帆1**,董燕1,徐明岗2,包耀贤2. 南方地区秸秆还田对土壤综合肥力和作物产量的影响[J]. 应用生态学报, 2012, 23(11): 3040-3944.

YANG Fan1, DONG Yan1, XU Ming-gang2, BAO Yao-xian2. Effects of straw returning on the integrated soil fertility and crop yield in southern China. [J]. Chinese Journal of Applied Ecology, 2012, 23(11): 3040-3944.