期刊论文

中文

灌溉排水学报

1672-3317

2018

37

4

34-38

10.13522/j.cnki.ggps.2017.0462

国家自然科学基金项目（31401951） 湖南省自然科学基金项目（2017JJ3117）

本校为第一机构

【目的】探究土壤中不同含水率对超级稻节水率以及节水条件下根系生长特征的影响。【方法】采用盆栽试验,通过设置不同的土壤含水率,以占田间持水率比例进行划分:A处理(90%~100%)、B处理(80%~90%)、C处理(70%~80%)、D处理(60%~70%),并以充分灌溉为对照(CK),测算了超级稻全生育期灌溉耗水量,并测试了超级稻不同生长阶段根系相关特征指标。【结果】土壤水分调控处理比CK节水15%~30%。土壤水分调控处理能够增加超级稻根系平均直径24.67%、总根体积4.80%。在超级稻生长阶段的颖花结实期和成熟期,土壤水分调控处理组根系活力高于CK。B处理根系生长优于其他土壤水分调控处理,另外B处理超级稻平均根系干...

[Objective]The aim of this paper is to unravel how a change in soil moisture affects the water use efficiency and root traits of super-rice under water-saving irrigation methods.[Method]Pot experiments were conducted with four treatments by controlling the soil moisture at 90％～100％ of the field capacity (A), 80％～90％ of the field capacity (B), 70％～80％ of the field capacity (C), and 60％～70％ of the field capacity (D). The control (CK) was to keep the moisture at the field capacity. For each treatment, we calculated the water consumptio...