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当前位置: 首页 > 文章 > 灌溉方式对湘南双季稻产量的影响机制研究 杂交水稻 2022,37 (1) 103-110
Position: Home > Articles > Mechanism of Effects of Irrigation Modes on Yield of Double-cropping Rice in Southern Hunan Hybrid Rice 2022,37 (1) 103-110

灌溉方式对湘南双季稻产量的影响机制研究

作  者：
李永松;袁帅;陈基旺;苏雨婷;崔璨;蒋艳方;陈平平;王晓玉;易镇邪
单  位：
湖南农业大学农学院/南方粮油作物协同创新中心
关键词：
湘南;双季稻;灌溉方式;产量;机制
摘  要：
为探索适宜湘南双季稻的灌溉方式,以早稻中嘉早17和晚稻盛泰优018为材料,比较研究了淹水灌溉、间歇灌溉、湿润灌溉3种灌溉方式对湘南双季稻产量的影响,并从根系形态、叶面积指数、叶绿素含量(SPAD值)、干物质积累与转运等方面探讨了其影响机制。结果表明,间歇灌溉处理2季总产最高,达15.55 t/hm~2,分别较淹水灌溉和湿润灌溉处理增产8.59%和10.44%;灌溉方式显著影响水稻产量构成因素,间歇灌溉处理成穗率、有效穗数和结实率显著高于另2个处理;灌溉方式影响水稻源特性,叶面积指数、叶片SPAD值、干物质积累量均以间歇灌溉处理最大,且水稻生育中后期叶面积指数、叶片SPAD值、单穴根鲜重、单穴根干重和单穴根体积降幅均以间歇灌溉处理最小;灌溉方式影响水稻物质转运,茎鞘与叶片物质输出率均以间歇灌溉处理最大。可见,间歇灌溉通过扩库、增源、提高茎鞘与叶片物质输出率实现双季稻增产,可在湘南双季稻区推广应用。
译  名：
Mechanism of Effects of Irrigation Modes on Yield of Double-cropping Rice in Southern Hunan
作  者：
LI Yong-song;YUAN Shuai;CHEN Ji-wang;SU Yu-ting;CUI Can;JIANG Yan-fang;CHEN Ping-ping;WANG Xiao-yu;YI Zhen-xie;College of Agronomy, Hunan Agricultural University/South Regional Collaborative Innovation Center for Grain and Oil Crops in China;
关键词：
southern Hunan;;double-cropping rice;;irrigation mode;;yield;;mechanism
摘  要：
To probe the optimal irrigation mode for double-cropping rice in southern Hunan, using early rice variety Zhongjiazao17 and late rice variety Shengtaiyou 018 as the materials, the effect of three irrigation modes(flooding irrigation, W1; intermittent irrigation, W2; wetting irrigation, W3) on yield of double-cropping rice in southern Hunan was comparatively studied, and the mechanism of its effect was discussed from the aspects of root morphology, leaf area index, chlorophyll content(SPAD) and dry matter accumulation and transportation, etc. The results showed that the total yield of double-cropping rice was the highest at 15.55 t/hm~2 in W2, higher than those by 8.59% and 10.44% in W1 and W3,respectively. Irrigation mode significantly affected yield components of rice with the ear-bearing tiller rate, effective panicles and seed setting rate of W2 significantly higher than those of W1 and W3. Irrigation mode affected source characteristics of rice with highest leaf area index, leaf SPAD value and dry matter accumulation, and least decreasing range of leaf area index,leaf SPAD value, fresh and dry weight and volume of roots per hill at the middle and late growth stage of rice in W2. Irrigation mode affected matter transport of rice with highest export rate of dry matter of stem-sheath and leaf in W2. It is indicated that the intermittent irrigation could increase yield of double-cropping rice by raising the source, sink and export rate of dry matter of stem-sheath and leaf, thus it could be extended and applied in double-cropping rice area of southern Hunan.

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