摘要
依据天长市二峰灌溉试验站2009年夏玉米地下水位埋深试验资料,通过6种地下水位控制处理和对照夏玉米试验,探讨了不同地下水埋深对夏玉米产量及产量构成关系的影响。结果表明:夏玉米的地下水补水量、夏玉米生长期的土壤含水量、夏玉米叶面积指数均随着水位埋深加大而降低;夏玉米植株高度在抽雄前期受地下水埋深影响较大,到开花期则基本无影响;同时试验表明地下水位埋深对产量的影响较大,在拔节前期地下水位埋深大于60 cm或在拔节后期地下水位埋深小于40 cm将影响玉米总穗粒数和百粒重,导致严重减产。
According to the irrigation experiment data of summer maize under different groundwater levels in 2009 at Erfeng Irrigation Station of Tianchang,a field experiment was conducted to evaluate the impact of different groundwater levels management on yield and yield components of summer maize.The groundwater level management consisted of six groundwater level control set and one free water level.The results showed that： supplementary water capacity,soil water content in growing periods and leaf area index of summer maize all decreased with the increase of groundwater depth;plant height of summer maize was remarkably influenced by the groundwater level in the early tassel,but rarely at flowering stage.The tests results also showed that the water level depth had greater impact on yield when the groundwater level was larger than 60 cm at the early elongation stage or less than 40 cm at the late elongation stage,and it had impact on total ear particle numbers and 100-seed weight,causing serious yield reduction.
出处
《干旱地区农业研究》
CSCD
北大核心
2010年第6期36-39,共4页
Agricultural Research in the Arid Areas
基金
国家现代玉米产业技术体系建设专项资金
国家科技基础性工作专项"中国农业气候资源数字化图集编制"(2007FY120100)
关键词
夏玉米
地下水位埋深
补水量
叶面积指数
产量
产量构成
summer maize
groundwater level
supplementary water capacity
leaf area index
yield
yield components
