生物降解地膜和灌溉定额对棉田土壤水热特性的影响

王一帆, 林涛, 王冬, 王新翠, 张昊, 刘海军, 陈茂光, 汤秋香

Effects of Biodegradable Film and Irrigation Quota on Soil Hydrothermal Characteristics in Cotton Field

Wang Yifan, Lin Tao, Wang Dong, Wang Xincui, Zhang Hao, Liu Haijun, Chen Maoguang, Tang Qiuxiang

表5 棉花生育期内不同处理下的土壤有效积温变化

Table 5 Changes of soil effective accumulated temperature under different treatments during cotton growth period ℃·d

处理 Treatment 苗期 Seedling stage 蕾期 Bud stage 花铃期 Flowering and boll stage 吐絮期 Boll opening stage 全生育时期 Whole growth period W1 PE 496.91a 363.34a 241.78a 183.12a 1285.14a BF 492.65ab 354.95cd 236.30d 177.21c 1261.12bc TZ 499.10a 360.91ab 239.28bc 178.48bc 1277.76a LS 455.00c 347.57e 239.08bc 180.98ab 1222.63e W2 PE 493.50ab 362.35a 241.10a 180.69ab 1277.64a BF 490.50ab 353.41d 238.36c 172.01d 1254.28c TZ 492.83ab 359.92ab 240.19ab 173.22d 1266.16b LS 455.62c 345.41e 235.70d 177.95bc 1214.68e W3 PE 484.19b 362.24a 240.82ab 172.60d 1259.85bc BF 486.54b 354.50cd 239.98abc 162.10f 1243.13d TZ 492.25ab 357.40bc 240.19ab 162.81ef 1252.64cd LS 448.69c 344.29e 230.82e 166.01e 1189.81f 灌溉定额Irrigation quota (W) 23.22*** 19.28*** 9.72*** 120.31*** 85.18*** 生物降解地膜Biodegradable film (BD) 0.80ns 1.24ns 23.07*** 6.45** 6.45** 灌溉定额×生物降解地膜 (W×BD) 40.85*** 42.05*** 31.92*** 10.47*** 72.68***