免耕对水稻根系活力和产量性状的影响  

Effect of No-tillage on the Root Activity and Yield Characters in Rice

作　　者：黄国勤[1] 黄小洋[1] 张兆飞[1] 刘隆旺[1] 章秀福[2] 高旺盛[3] 

机构地区：[1]江西农业大学生态科学研究中心,江西南昌330045 [2]中国水稻研究所,浙江杭州310006 [3]中国农业大学,北京100094

出　　处：《中国农学通报》2005年第5期170-173,共4页Chinese Agricultural Science Bulletin

基　　金：国家重大科技专项"粮食丰产科技工程"子课题(2004BA520A14-14)研究内容之一。

摘　　要：对早稻进行了免耕与常耕栽培对比试验.研究结果表明:与常耕栽培水稻相比,免耕水稻,根系活力高7.4%～34.9%,各生育期的干物质占黄熟期干物质之比高.有效穗数、每穗实粒数、千粒重和实际产量分别高1.1%、5.1%、0.6%和10.0%.产量与根系活力和干物质积累的相关分别达到0.9和0.87以上.The comparative experiments were conducted to study the effect of different tillage methods in root activities and yield characters. The results showed that the root activity of rice plants in the no-tillage treatment increased by 7.4%~34.9%, the ratio of dry-matter in different stages to that of yellow maturity stage was bigger, the effective spikes, filled grains per spike, 1000-grain weight and actual yield were increased separately by 1.1%, 5.1%, 0.6% and 10% than early rice cultivated in conventional paddy. The correlation coefficient between the activity of root system of early rice, dry-matter and the yield were bigger individually than 0.9 and 0.87.

关 键 词：根系活力 产量性状 水稻 免耕 每穗实粒数 干物质积累 对比试验 研究结果 有效穗数 生育期 千粒重 栽培 早稻 熟期 

分 类 号：S511[农业科学—作物学] S562