播期温度对新疆膜下滴灌棉花出苗率及苗期生长的影响

随龙龙,田景山,姚贺盛,张鹏鹏,梁福斌,王进,张旺锋

Effects of Different Sowing Dates on Emergence Rates and Seedling Growth of Cotton Under Mulched Drip Irrigation in Xinjiang

LongLong SUI,JingShan TIAN,HeSheng YAO,PengPeng ZHANG,FuBin LIANG,Jin WANG,WangFeng ZHANG

表2 不同温度播种棉花出苗率和出苗天数的变化

Table 2 Changes of seedling emergence rate and emergence days at different sowing dates

指标 Item 年份 Year 2016 2017 播前3 d膜下5 cm土壤平均温度 Soil mean temperature averaged over three days before sowing date under 5 cm for mulching film (℃) 17.6 18.4 22.2 9.5 12.0 18.7 24.7 出苗率 Emergence rate (%) 86.0±1.01b 93.0±1.85a 91.5±1.04a 84.0±1.21c 86.5±0.40b 94.0±1.15a 91.0±0.98b 出苗天数 Emergence days (d) 9 8 10 15 12 7 8