滴灌模式和水分调控对夏玉米干物质和氮素积累与分配及水分利用的影响

杨明达,关小康,刘影,崔静宇,丁超明,王静丽,韩静丽,王怀苹,康海平,王同朝

Effects of drip irrigation pattern and water regulation on the accumulation and allocation of dry matter and nitrogen, and water use efficiency in summer maize

Ming-Da YANG,Xiao-Kang GUAN,Ying LIU,Jing-Yu CUI,Chao-Ming DING,Jing-Li WANG,Jing-Li HAN,Huai-Ping WANG,Hai-Ping KANG,Tong-Chao WANG

表1 试验地土壤的主要物理特性

Table 1 Main physical characteristics of soil in experimental plots

土层 Soil layer (cm) 田间持水量 Field water capacity (%) 容重 Bulk density (g cm-3) 土壤机械组成 Soil mechanical composition (%) 沙粒 Sand 粉粒 Silt 黏粒 Clay 0-20 23.63 1.31 55.89 28.97 15.14 20-40 21.77 1.46 53.61 29.40 16.99 40-60 21.95 1.31 50.73 30.92 18.35 60-80 23.36 1.36 59.01 29.94 11.05 80-100 23.79 1.31 66.42 28.96 4.62