不同生长时期土壤渍水对春玉米生长发育的影响  

The effects of soil waterlogging at different growth stages on the growth and development of spring corn:

作　　者：杨京平[1] 陈杰[1] 

机构地区：[1]浙江农业大学农业生态研究所

出　　处：《浙江农业学报》1998年第4期188-192,共5页Acta Agriculturae Zhejiangensis

摘　　要：水槽试验结果表明，土壤渍水环境及渍水时间对春玉米不同生长发育时期的地上部的影响：４叶期土壤渍水是影响玉米生长发育的关键期，渍水５天达显著水平。渍水１５天产量下降显著，达２１．７８％。渍水使株高降低，叶片数和光合有效叶面积减少，干物质积累速率下降。玉米不同时期渍水对产量性状有影响，前期渍水主要是减少每穗行数及每行粒数，后期则主要是降低每穗行粒数及百粒重，并使果穗的秃尖度增大。The results obtained from a controlled irrigation water experiments showed that the corn with 4 leaves stage is very sensitive to soil waterlogging. Soil waterlogging for 5 days decreased the plant height,leaf number and effective photosynthesive area and biomass.Soil waterlogging for 15 days decreased the yield by 21.78% as compared with the control.Soil waterlogging mainly decreased the yield components, e.g. grain rows per ear and grain number at early stage of corn growth,and reduced the grain rows per ear and grain weight of 100 and increased the barren ear part at same time at late stage of corn growth.

关 键 词：稻田 春玉米 渍水 生长发育 土壤渍水 

分 类 号：S513.01[农业科学—作物学]