极端年型旱地麦田深松和覆盖播种水分消耗与植株氮素吸收、利用关系的研究

李念念, 孙敏, 高志强, 张娟, 张慧芋, 梁艳妃, 杨清山, 杨珍平, 邓妍

A Study on the Relationship Between Water Consumption and Nitrogen Absorption, Utilization Under Sub-Soiling During the Fallow Period Plus Mulched-Sowing in Humid and Dry Years of Dryland Wheat

NianNian LI, Min SUN, ZhiQiang GAO, Juan ZHANG, HuiYu ZHANG, YanFei LIANG, QingShan YANG, ZhenPing YANG, Yan DENG

表4 休闲期深松和覆盖播种旱地小麦对各生育阶段吸氮量及其比例的影响

Table 4 Effect of subsoiling during fallow period and sowing-mulched on nitrogen absorption amount and its ratio at different growth stages in dryland wheat

年份 Year 耕作 Tillage 播种方式 Sowing method 播种—拔节STJ 拔节—开花JTA 开花—成熟ATM 吸氮量 N absorption (kg·hm-2) 比例 Ratio (%) 吸氮量 N absorption (kg·hm-2) 比例 Ratio (%) 吸氮量 N absorption (kg·hm-2) 比例 Ratio (%) 丰水年 Humid year (2011-2012) SS FSH 59.43a 28.59bc 112.21a 53.99a 36.19a 17.41d FM 58.74a 29.85abc 102.30b 51.99ab 35.74a 18.16d DS 51.59b 30.13ab 86.34c 50.44b 33.26b 19.43c NT FSH 43.47d 29.15bc 74.60d 50.03b 31.04c 20.82b FM 47.72c 28.56c 85.49c 51.18ab 33.86b 20.26bc DS 40.04e 30.79 a 59.58e 45.81c 30.41c 23.40a 欠水年 Dry year (2012-2013) SS FSH 36.82a 31.42ab 57.06b 48.68b 23.32a 19.90bc FM 37.92a 29.43b 66.66a 51.74a 24.27a 18.83c DS 32.86b 32.36a 46.80c 46.09c 21.88b 21.55ab NT FSH 28.95c 31.88ab 41.89d 46.13c 19.97bc 21.99ab FM 31.56b 29.05b 55.23b 50.84a 21.85b 20.11bc DS 26.15d 32.71a 35.28e 44.12d 18.53c 23.17a 欠水年 Dry year (2015-2016) SS FSH 30.78b 28.11ab 56.23b 51.35a 22.50a 20.54b FM 33.78a 27.97b 63.77a 52.80a 23.23a 19.23b DS 29.56bc 29.50a 48.96c 48.87b 21.67b 21.63ab NT FSH 26.76c 29.21a 45.11d 49.24ab 19.73c 21.54ab FM 30.32b 28.33ab 54.84b 51.25a 21.86b 20.42b DS 24.28d 30.10a 37.30e 46.25c 19.08c 23.65a