摘要
为探明免耕对水稻干物质生产及产量的影响,以金优253为材料进行盆栽试验,并测定水稻在免耕、常耕、分根栽培三种栽培条件下水稻干物质生产量和产量。结果表明:分根栽培条件下,免耕侧根系干重在早季和晚季均比常耕侧极显著的低。在单一耕作方式下,免耕水稻地上部和根系干重均比常耕水稻低,根冠比和产量比常耕水稻的高,其差异多数情况下不显著。因此认为,免耕对水稻根系生长有明显的影响,但通过地上部与根系生长的协调作用,使根冠比增加,并使产量呈增加趋势。
This paper is aimed to discuss the influence of no tillage on dry matter production and grain yield; Pot experiments were conducted in the early and late seasons of 2007 to measure dry matter production and grain yield in rice under no indicated highly significantly tillage lower , conventional tillage and root dry root weight on the side of separating cultivation conditions. Rice no tillage separating cultivation condition. However, under the condition of single tillage in both seasons under root pattern, rice indicated lower plant dry weight and dry root weight, greater ratio of dry root weight to dry plant weight and greater grain yield under no tillage condition, and the differences were not significant at most situations. No tillage made an obvious influence on rice root growth, but rice could get more grain yield by the harmony action between root and plant and the increased ratio of dry root weight to dry plant.
出处
《中国农学通报》
CSCD
北大核心
2009年第13期70-73,共4页
Chinese Agricultural Science Bulletin
基金
国家自然科学基金项目"免耕抛秧水稻氮素利用及栽培调控的生理学研究"(30560066)
教育部重点项目"免耕和稻草还田对水稻根系生长的调节作用"(207086)
广西科学基金项目"水稻根系生长对免耕土壤的适应性及栽培调控研究"(0640020)
关键词
水稻
免耕
干物质生产
产量
rice, no tillage, dry matter production, yield
