播/收期对冬小麦-夏玉米一年两熟模式周年 气候资源分配与利用特征的影响

周宝元,马玮,孙雪芳,高卓晗,丁在松,李从锋,赵明

Effects of Different Sowing and Harvest Dates of Winter Wheat- Summer Maize Under Double Cropping System on the Annual Climate Resource Distribution and Utilization

ZHOU BaoYuan,MA Wei,SUN XueFang,GAO ZhuoHan,DING ZaiSong,LI CongFeng,ZHAO Ming

表5 不同播期冬小麦产量及产量构成

Table 5 Yield and yield components of winter wheat with different sowing dates

年份 Year 播期 Sowing date 品种 Variety 产量 Grain yield (kg·hm-2) 穗数 Spikes number (×104/hm2) 穗粒数 Kernel number per spike 千粒重 Thousand kernel weight (g) 2015-2016 Ⅰ AK58 8212.9a 634.5a 32.3ab 42.3a ZM66 8011.5ab 637.5a 33.5a 41.2ab Ⅱ AK58 8141.4ab 645.1a 31.6bc 40.7abc ZM66 7830.1bc 625.5ab 32.7ab 39.4cdef Ⅲ AK58 7099.7d 598.5bc 30.8c 39.5bcdef ZM66 6902.5d 601.5bc 31.2bcd 38.5def Ⅳ AK58 6528.5e 580.5c 30.1d 38.1ef ZM66 6346.4e 598.5bc 30.6cd 37.8f Ⅴ AK58 7487.4c 634.2a 30.8cd 39.6bcde ZM66 7859.7b 627.3ab 32.4ab 39.8bcd 2016-2017 Ⅰ AK58 9401.9a 663.2a 32.7bc 44.6a ZM66 9278.7a 657.3a 34.5a 43.3abc Ⅱ AK58 9225.6a 652.5a 32.2bcd 43.8ab ZM66 9120.1a 655.4a 33.7ab 43.1abc Ⅲ AK58 7775.9c 616.5b 31.2cde 41.7cde ZM66 7925.1c 619.2b 32.4bcd 41.2de Ⅳ AK58 7377.6d 601.5b 30.6e 40.4e ZM66 7631.9cd 612.6b 31.3cde 40.1e Ⅴ AK58 8630.9b 657.2a 31.1de 41.6cde ZM66 9139.2a 654.1a 33.9ab 42.5bcd