沟灌渗透对直播水稻根系形态及功能的影响  

Influence of Irrigation and Penetration through Ditch on Shape and Function of Direct-Seeding Rice Root System

作　　者：何春林[1] 郭荣发[1] 陈彪[1] 

机构地区：[1]湛江海洋大学农学院,广东湛江524088

出　　处：《农业现代化研究》2003年第6期452-455,共4页Research of Agricultural Modernization

基　　金：广东省科技攻关项目"水稻非充分灌溉节水高产栽培新技术研究与示范"部分内容 (项目编号 :2 0 0 2 A2 0 40 90 2 )

摘　　要：研究了不同畦宽沟灌渗透与常规淹水栽培条件下直播水稻根系特征、机能的差异及其产量性状的表现。结果表明:不同处理直播水稻根系的数量、长度、粗度、分布及活力和产量均存在一定的差异。其中,以窄畦(畦宽90cm)和中畦(畦宽130cm)沟灌渗透处理的根的数量、长度、粗度和表面面积较大,机能较强,产量分别较常规淹水栽培增产11.6%和10%。This paper studies the difference of characteristic and function of the directseefing rice root system and its yield situation under different widths of farmland with irrigation and penetration through ditch and conventional cultivation with treatment of inundation.The result shows that the quantity,length,size,distribution of directseeding rice root system and its vigor and yield with dufferent treatments are different,among which,the quantity,length,size and surface atea of the root with the treatment of irrigation and penetration through ditch in narrow farmland(90 cm wide)and mediumsized farmland(130 cm wide)are bigger with more powerful function,and the yield is 116% and 10% higher respectively than the conventional cultivation with treatment of inundation.

关 键 词：沟灌渗透 直播水稻 根系形态 产量性状 

分 类 号：S511[农业科学—作物学]