稻田转为菜地初始阶段温室气体排放特征

邬磊,何志龙,汤水荣,吴限,张文菊,胡荣桂

Greenhouse Gas Emission During the Initial Years After Rice Paddy Conversion to Vegetable Cultivation

WU Lei,HE ZhiLong,TANG ShuiRong,WU Xian,ZHANG WenJu,HU RongGui

表1 稻田和菜地施肥管理一览表

Table 1 Overview of the fertilization practices of double-rice and vegetable fields during the observation period from 2012 to 2015

稻田 Rice paddy 菜地 Vegetable field 施肥时间 Fertilization date 肥料类型 Fertilizer type 施肥量 Rate (kg N·hm-2) 施肥时间 Fertilization date 肥料类型 Fertilizer types 施肥量 Rates (kg N·hm-2) 早稻 Early rice 红菜苔 Red cabbage 3 May 2013 尿素 Urea 60 8 Dec 2012 复合肥* Compound fertilizer 120 27 May 2013 尿素 Urea 36 2 Mar 2013 尿素 Urea 80 1 Jul 2013 尿素 Urea 24 辣椒 Pepper 晚稻 Late rice 18 Apr 2013 复合肥 Compound fertilizer 90 14 Jul 2013 尿素 Urea 75 16 Jun 2013 尿素 Urea 60 1 Aug 2013 尿素 Urea 45 7 Sep 2013 尿素 Urea 30 白萝卜 Radish 14 Sep 2013 复合肥 Compound fertilizer 120 早稻Early rice 11 Nov 2013 尿素 Urea 80 6 May 2014 尿素 Urea 60 17 May 2014 尿素 Urea 36 空心菜 Water spinach 27 Jun 2014 尿素 Urea 24 17 Apr 2014 复合肥 Compound fertilizer 80 10 May 2014 尿素 Urea 50 晚稻Late rice 27 Jun 2014 尿素 Urea 50 24 Jul 2014 尿素 Urea 75 24 Aug 2014 尿素 Urea 20 31 Jul 2014 尿素 Urea 45 10 Sep 2014 尿素 Urea 30 白萝卜 Radish 6 Sep 2014 复合肥 Compound fertilizer 120 早稻Early rice 30 Oct 2014 尿素 Urea 80 27 Apr 2015 尿素 Urea 60 6 May 2015 尿素 Urea 36 辣椒 Pepper 25 Jun 2015 尿素 Urea 24 16 Apr 2015 复合肥 Compound fertilizer 90 15 Jul 2015 尿素 Urea 60 晚稻Late rice 20 Jul 2015 尿素 Urea 75 白萝卜 Radish 28 Jul 2015 尿素 Urea 45 2 Oct 2015 复合肥 Compound fertilizer 120 7 Sep 2015 尿素 Urea 30 29 Oct 2015 尿素 Urea 80 总氮用量 Total amount 810 总氮用量Total amount 1300