盐渍化水田秸秆还田对水稻生长及产量的影响  

Effects of Rice Straw Application to Soda-Salinization Paddy Soil on Rice Growth and Grain Yield

作　　者：孙扬[1] 刘亚亮[1] 肖薇航[1] 范莉莉[1] 周奕含[1] 冷麟良[1] 邵玺文[1] 张治安[1] 

机构地区：[1]吉林农业大学农学院,吉林长春130118

出　　处：《作物杂志》2012年第4期49-52,共4页Crops

基　　金："十一五"国家科技支撑计划重点项目(2009BADB3B03);吉林省科技发展计划重点项目(20090221);吉林省现代农业产业技术体系专项资金项目(2010012)

摘　　要：选择盐渍化水田进行水稻秸秆30%、50%和70%还田处理,研究水稻秸秆还田对水稻生长及产量的影响。结果表明,与CK相比,30%、50%和70%秸秆还田对拔节期水稻生长及地上部干物质积累没有显著影响,对灌浆成熟期影响显著。50%秸秆还田可提高灌浆期水稻有效叶片数和有效叶片面积,增加地上部干物重;30%秸秆还田的水稻产量比对照提高4.0%,差异不显著(P>0.05);50%秸秆还田的水稻产量比对照提高9.4%,差异显著(P<0.05);70%秸秆还田水稻产量比对照降低1.2%,差异不显著(P>0.05)。说明在盐渍化水田秸秆还田时,秸秆还田量不能过多,控制在50%左右最佳,还田量过高不利于水稻生长发育,产量降低。The soda-salinization paddy soil was treated with 30% ,50% and 70% of rice straw,the effects of rice straw application to soda-salinization paddy soil on rice growth and grain yield were studied. The results showed that,in the soda-salinization paddy soil with 30% ,50% and 70% of rice straw application ,the rice growth and the aerial part dry matter had no significant differences with the control at jointing stage;but there were significant differences with the control at grain filling stage. In the soda-salinization paddy soil with 50% rice straw applica- tion, efficient leaf numbers, efficient leaf area and aerial part dry matter of rice were significantly higher than those in the control at grain filling stage. In the soda-salinization paddy soil with 30% rice straw application, the grain yield was increased by 4.0% compared with the control（ P 〉 0.05 ）. In the soda-salinization paddy soil with 50% straw application, the grain yield was increased by 9.4% compared with the control（P 〈 0.05 ）. In the soda-salin- ization paddy soil with 70% straw application, the grain yield was reduced by 1.2% compared with the control（ P 〉 0.05）. These results showed that 50% rice straw application was optimum for grain yield ; it was not beneficial to rice growth and grain yield when rice straw application was higher than 50%.

关 键 词：水稻 秸秆还田 产量 盐渍化水田 

分 类 号：S511[农业科学—作物学]