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当前位置: 首页 > 文章 > 长期施用氮、磷和有机肥对不同种植体系土壤有效硫累积的影响 植物营养与肥料学报 2009,15 (3) 613-617
Position: Home > Articles > Soil available sulfur accumulation in a long-term N,P and organic fertilizer experiment under the different cropping systems Journal of Plant Nutrition and Fertilizers 2009,15 (3) 613-617

长期施用氮、磷和有机肥对不同种植体系土壤有效硫累积的影响

作  者：
危锋;郝明德
单  位：
中国科学院研究生院;中国科学院水利部水土保持研究所
关键词：
长期试验;氮、磷和有机肥;种植体系;有效硫累积
摘  要：
以22年定位试验为基础,研究了长期施用氮、磷和有机肥(NPM)对不同种植体系土壤有效硫在剖面上分布与累积状况。结果表明,在60—80 cm土层各处理出现第一个累积峰,累积峰值为粮饲轮作31.3,玉米连作29.2,小麦连作27.9,粮豆轮作25.6,苜蓿连作24.0 mg/kg;在140—180 cm土层各处理又出现有效硫的第二个累积峰,累积峰值为粮饲轮作44.7,粮豆轮作43.1,小麦连作41.0,玉米连作39.7,苜蓿连作36.5 mg/kg。第二累积峰值均大于第一累积峰值。0—200 cm土层有效硫总累积量粮饲轮作高达746.3 kg/hm~2,其次为玉米连作640.6,粮豆轮作为638.3,小麦连作为622.4,苜蓿连作最小为557.3 kg/hm~2。长期施用磷肥和有机肥是有效硫在土壤中累积的主要因素,有效硫在土壤剖面上有向深层迁移的趋势。不同作物对硫的吸收利用差异和不同种植方式对有效硫的累积与分布产生影响。
译  名：
Soil available sulfur accumulation in a long-term N,P and organic fertilizer experiment under the different cropping systems
作  者：
WEI Feng~(1,2),HAO Ming-de~(1*) (1 Institute of Soil and Water Conservation,CAS and MWR,Yangling,Shaanxi 712100,China; 2 Graduate School of CAS,Beijing 100039,China)
关键词：
long-term experiment;;N,P and organic fertilizer;;cropping systems;;available sulfur accumulation
摘  要：
Available sulfur accumulation and distribution in soil profile were studied based on the 22 years' location experiments under the different cropping systems with continuous application of N,P and organic fertilizer(NPM).The results show that there are two peaks of available sulfur in soil profiles.The first peak is at 60-80 cm soil depth with the values of 31.3,29.2,27.9,25.6 and 24.0 mg/kg under the grain-forage rotation,maize succession,wheat succession, grain-legume rotation and alfalfa succession systems,respectively.The second peak is at 140-180 cm soil depth,and the values in the grain-forage rotation,grain-legume rotation,wheat succession,maize succession and alfalfa succession are 44.7,43.1,41.0,39.7 and 36.5 mg/kg,respectively,which are higher than those of the first peak.The accumulation of available sulfur in soil profiles(0-200 cm) under the grain-forage rotation,maize succession,grain-legume rotation, wheat succession and alfalfa succession are 746.3,640.6,638.3,622.4 and 557.3 kg/ha,respectively.The results also indicate that long-time application of P and M fertilizer is the principal factor of influencing the distribution of available sulfur in soil profile under the different cropping systems,and soil available sulfur is transported to deep soils. The results suggest that the differences of sulfur uptake and utilization caused by the different crops and cropping systems have effects on accumulation and distribution of available sulfur in soil profile.

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