黔中地区非充分灌溉条件下油菜耗水规律研究  

Research on Water Consumpation Law of Rape under Non-sufficient Irrigation in Mid-Guizhou

作　　者：冯诚[1] 杨静[1] 方小宇[1] 李长江[1] 

机构地区：[1]贵州省水利科学研究院,贵阳550002

出　　处：《节水灌溉》2011年第5期12-13,16,共3页Water Saving Irrigation

摘　　要：基于对黔中地区油菜水分与产量的关系和需水规律进行研究。结果表明,油菜水分与产量关系成二次抛物线关系,函数式为y=-0.005 8x2+2.18x-39.153。在整个生育期中,花期和成熟期需水要求明显,旺长期需水强度明显比苗期要大,而苗期需水强度则相对较小。为制定贵州油菜节水高效灌溉制度,找出贵州地区油菜需水规律提供参考依据。The relationship between water and yield of rape,and water demand law of rape in Mid-Guizhou are studied in this paper.The result shows that the relationship between water and yield of rape can be expressed as y=-0.005 8 x2＋2.18 x-39.153.Furthermore,in the whole growth period,water demand in florescence and autumn period is more distinctness than any other period.At the same time,the intensity in flourish stage is obviously larger than seedling stage,and it is smallest in seedling stage.The result will offer some useful references to decide water-saving irrigation schedule and discover the water demand law of rape in Guizhou Province.

关 键 词：油菜 水分 产量 需水规律 

分 类 号：S274[农业科学—农业水土工程]