水稻分蘖期淹水试验研究  被引量:5

An Experimental Study of Rice Tillering Stage to Inundation Condition

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作  者:王矿[1,2] 王友贞[1,2] 汤广民[1,2] 

机构地区:[1]安徽省.水利部淮河水利委员会水利科学研究院,安徽蚌埠233000 [2]安徽省水利水资源重点实验室,安徽蚌埠233000

出  处:《中国农村水利水电》2015年第10期23-25,共3页China Rural Water and Hydropower

基  金:国家自然科学青年基金项目(51209001);水利部公益性行业科研专项经费项目(200801044)

摘  要:据试验地区的气象、水文条件及水稻的受淹敏感特性,水稻分蘖期选择淹水深度和淹水历时为试验因素。淹水深度为占株高的2/4、4/4,淹水历时为3、6、9d。结果表明,水稻分蘖期淹水促进水稻分蘖,使得分蘖盛期提前。没顶淹水9 d水稻株高增长加快,出水后株高高于对照组15 cm左右。深度占株高的2/4的各个淹水历时的处理对产量影响不大,部分处理有增产的表现。以淹水历时6 d减产10%为限,水稻在分蘖期的蓄雨深度上限为25~30 cm ,高于水稻常规灌溉的蓄水上限15 cm ;以此为据,利用安徽沿淮约200万hm2水稻收集暴雨资源,不仅缓解了下游地区的防洪压力,而且缓解过度排水带来的环境压力和减少抽排对能源的消耗。此外,试验取得水稻耐淹深度和耐淹历时等数据,对利用水稻田蓄滞暴雨参数的确定与排水系统运行管理有参考价值。According to the meteorological ,hydro‐logical conditions in the test area and inundation sensitivity of rice in tillering stage , the test studies on response and adaptation of rice to inundation depth and duration during the rice tillerring stage .Two ratio of the inundation depth accounted for rice plant height are chosen ,i .e .2/4 ,4/4 .Meanwhile inundation lasts for 3 days ,6 days .9 days are selected .The results show that Inundation promotes rice tillering ,the earlier occurrence of its maximal tillers is 15 cm more than CK ,and inundation ratio of 2/4 and 4/4 lasts 3d and 6d treatments have little effect on yield reduction ,instead ,product of inunda‐tion 6d treatment yield increases to some degree .With the limit of 10% yield reduction and 6 days inundation ,the up limit water in‐undation depth is 25 to 30cm .According to these ,using 0 .2 million hectares rice field along the Huaihe River for collecting heavy rain not only alleviates the flood pressure to the downstream rivers ,but also reduces the pumping energy consumption .Therefore , the experiment results serve as a reference for making use of storm water resources .Moreover ,it is helpful for drainage system de‐sign and operation and maintenance in drainage management .

关 键 词:淹水 产量 水稻分蘖期 排水管理 

分 类 号:S125[农业科学—农业基础科学]

 

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