江西农业大学学报Issue(2)：264-268,5.DOI:10.13836/j.jjau.2015039
成都平原不同秸秆还田量对土壤水分及机播油菜生长的影响
Effects of Different Amounts of Straw Returning on Soil Water and the Growth of Mechanized Sowing Rapeseed in Chengdu Plain
摘要
Abstract
To study the effects of different straw returning amounts on soil water and the growth of mecha⁃nized sowing rapeseed in Chengdu plain and provide a theoretic basis for mechanical rapeseed production.Tak⁃ing Chuanyou 36 as the materials,a field experiment with three treatments including non⁃straw returning( CK) , half straw returning and full straw returning was designed,and the moisture content of soil,the emergence qual⁃ity,the agronomic characters and yield of mechanized sowing rapeseed were measured and analyzed.The results showed that,compared with CK, the moisture content in 0-10 cm and 10-20 cm soil layer increased by 0.70%-4.15% and 0.13%-3.04% respectively during the rapeseed growing season.Both the emergence rate and the seedling uniformity of mechanized sowing rapeseed decreased with the increasing amount of straw retur⁃ning.The number of effective branches and effective pods increased significantly after returning straw to the field,compared with that of CK and half straw returning,the number of effective branches increased by 19.45%and 9.12% in the treatment of full straw returning, the number of effective pods increased by 36. 74% and 18.08% respectively.Straw returning treatments were in favor of increasing rapeseed yield,while the yield of half straw returning and full straw returning increased by 10.70%and 6.13%compared with that of CK respec⁃tively,the seed oil content increased with the increasing amount of straw returning,the oil production of half straw returning increased by 13.92% and 1.12% over that of CK and full straw returning respectively.The opti⁃um amount of straw returning was half straw returning in Chengdu plain.关键词
秸秆还田/土壤水分/机播油菜/成都平原Key words
straw returning/moisture content/mechanized sowing rapeseed/Chengdu plain分类
农业科技引用本文复制引用
陈红琳,陈尚洪,王昌桃,郑开林,蒋梁材,刘定辉..成都平原不同秸秆还田量对土壤水分及机播油菜生长的影响[J].江西农业大学学报,2015,(2):264-268,5.基金项目
国家科技支撑计划项目（2010BAD01B08）、四川省财政基因工程项目（2011JYGC04-013）和四川省“十二五”农作物及畜禽育种攻关项目 （）
