不同水稻品种(组合)无灌溉水层栽培试验

为筛选出节水抗旱的水稻新品种及无灌溉水层栽培的可行性,进行了不同水稻品种(组合)无灌溉水层栽培试验。结果表明,水稻栽培除插秧返青和孕穗抽穗期灌浅水或保湿外,大部分生长期靠自然降水灌溉且全程不排水的无水层管理,同样可以夺取高产量,并有效避免农业面源污染。单位面积稻谷产量与平均剑叶长、穗总粒数、蔸最高苗、成穗率成一定程度正相关关系,分蘖能力强、穗总粒数多、后期光合面积大的品种产量高。

Development Prospect and Strategies of Water-saving and Drought-resistance Rice

Water-saving and drought-resistance upland rice has become a preferable choice for cotton farmlands ready for changing crops or paddy fields with water in short,because simplified and mechanical cultivation can be applied for the rice varieties of drought resistance and high yield.At present,it has been applied with an area of 400 000 hm2 in Hunan Province and the area continues growing.The research bred and introduced the relevant cultivation technology standard applicable to local water-saving and drought-resistance rice varieties in order to improve farmer＇s benefits.