作物学报2017，Vol.43Issue(7)：1030-1042,13.DOI:10.3724/SP.J.1006.2017.01030
滨海盐碱地棉花秸秆还田对土壤理化性质及棉花产量的影响
Effects of Cotton Stalk Returning on Soil Physical and Chemical Properties and Cotton Yield in Coastal Saline-Alkali Soil
摘要
Abstract
A continuous three-year field experiment of cotton-residue incorporation in coastal saline-alkali land was conducted, with two treatments: residue removal and residue incorporation. The successive cotton stalk returning significantly decreased soil bulk density in 0–30 cm soil layer and soil micro-aggregates with particle size <0.25 mm in 0–10 cm soil layer, while significantly increased the content of soil macro-aggregates with particle size >5 mm in 0–10 cm soil layer. Compared with the control (residue removal), the treatment of cotton residues incorporation significantly increased soil organic matter, nitrate nitrogen, ammonium nitrogen and available potassium by 13.45%, 18.57%, 22.80%, and 22.57%, respectively, while decreased soil available phospho-rus and salinity by 18.29% and 16.59% at pre-sowing and each growth stage in 0-20 cm soil layer. Soil nitrate nitrogen and am-monium nitrogen were increased by 37.20% and 31.62% and soil salinity had a reduction of 19.06% after successive cotton stalk returning for three years in 20–40 cm soil layer, and also significantly increased by 38.26% and 24.83% in 40–60 cm soil layer. Successive cotton stalk returning significantly increased seed cotton yield by 11.57%, 19.01%, and 13.24% and lint yield by 18.56%, 19.78%, and 18.73% in three years, but not affected single boll weight and lint percentage.关键词
棉花/秸秆还田/盐碱地/土壤理化性质/产量Key words
Cotton/Stalk returning/Saline-alkali soil/Soil physical and chemical properties/Yield引用本文复制引用
秦都林,王双磊,刘艳慧,聂军军,赵娜,毛丽丽,宋宪亮,孙学振..滨海盐碱地棉花秸秆还田对土壤理化性质及棉花产量的影响[J].作物学报,2017,43(7):1030-1042,13.基金项目
本研究由国家自然科学基金项目(31601253), 山东省现代农业产业技术体系(棉花)建设专项(SDAIT-03), 山东省农业良种工程项目(2013LZ, 2014LZ), 山东省自然科学基金项目(ZR2016CQ20)和山东农业大学盐碱地改良利用项目资助.The study is supported by National Natural Science Foundation of China (31601253), the Modern Agro-industry Technology Research System (SDAIT-03), Shandong Program for Improved Varieties of Agriculture (2013LZ, 2014LZ), the Natural Science Foundation of Shandong Province (ZR2016CQ20), and the Saline Alkali Land Improvement and Utilization Project of Shandong Agricultural University. （31601253）
