水稻强化栽培的适宜秧龄和栽植密度研究  

Study on the Seedling-age and Planting Density in SRI

作　　者：龙旭[1] 马均[1] 许凤英[1] 王贺正[1] 黄清龙[1] 袁志祥[2] 

机构地区：[1]四川农业大学水稻研究所,四川温江611130 [2]成都农业科技职业学院,四川温江611130

出　　处：《四川农业大学学报》2005年第3期368-373,共6页Journal of Sichuan Agricultural University

基　　金：国家粮食丰产科技工程(2004BA520A05);农业部结构调整重大专项(2003-01-03B);四川省育种攻关后补助。

摘　　要：以杂交稻协优527为材料,研究了在强化栽培条件下适宜的移栽叶龄和栽植密度.结果表明:不同移栽叶龄(2～5叶龄)对其产量的影响很小,在强化栽培应用中,可以采用4～5叶龄的带蘖秧苗移栽;在本试验范围内,强化栽培的适宜栽培密度为9万穴/hm2～13.5万穴/hm2,此时,后期光合产物积累多,穗、粒结构合理,产量可达最高.The seedling-age and planting density in System of Rice Intensification （SRI） were studied with Xieyou 527, a hybrid rice cultivar. The result indicates that no effect of seedling-ages on grain yield is found. In production practice of SRI, the selection of seedling-ages is 2 to 5 leaf-age. The suitable planting density is 9 × 10^4 plant/hm^2 to 13.5 × 10^4 plant/hm^2 and the grain yield is the highest.

关 键 词：水稻强化栽培 秧龄 栽植密度 产量 

分 类 号：S511[农业科学—作物学] S318