晋南黄土旱塬小麦养分投入与化肥减施经济环境效应评价

马红梅,曹寒冰,谢英荷,李廷亮,刘凯,张奇茹,姜丽伟,曹静,邵靖琳,武文玥,栗文琪

Evaluation on Fertilizer Application and Its Economic-Environmental Benefits Associated with Fertilizer Reduction Potential for Dryland Wheat in Loess Plateau of Southern Shanxi Province

MA HongMei,CAO HanBing,XIE YingHe,LI TingLiang,LIU Kai,ZHANG QiRu,JIANG LiWei,CAO Jing,SHAO JingLin,WU WenYue,LI WenQi

表2 调研区农户小麦产量和养分投入现状

Table 2 Winter wheat grain yield and nutrient input in the investigated region

年份 Year	样本数 Sample	产量水平农户比例 Farmer’s proportion in yield level (%)					平均产量 Mean yield (kg·hm^-2)	养分投入量 Nutrient input rate (kg·hm^-2)
年份 Year	样本数 Sample	≤2200	2200-3200	3200-4200	4200-5200	>5200	平均产量 Mean yield (kg·hm^-2)	N	P₂O₅	K₂O
2008-2009	150	10.7	26.7	24.0	21.3	17.3	3735	264.2	103.7	28.9
2009-2010	95	3.2	50.5	24.2	13.7	8.4	3401	369.3	252.7	153.6
2010-2011	58	12.1	60.3	1.7	0.0	25.9	3282	207.8	90.3	56.7
2011-2012	84	31.0	13.1	9.5	13.1	33.3	3525	109.2	91.2	28.8
2012-2013	76	60.5	28.9	7.9	0.0	2.6	2146	83.2	49.1	19.7
2013-2014	150	5.3	24.7	20.0	26.7	23.3	4186	202.5	115	40.8
2014-2015	125	12.0	41.6	33.6	7.2	5.6	3643	250.5	143.5	71.5
2015-2016	138	31.2	43.5	22.5	2.2	0.7	3208	145.3	75.0	40.2
2016-2017	108	0.0	49.1	19.4	13.9	17.6	4111	204.3	95.9	60.7
平均Mean		18.4	37.6	18.1	10.9	15.0	3711	292.3	159.8	92.0
总计All	984