【摘要】 研究不同施肥处理对辣椒与大白菜轮作模式下作物产量和土壤理化性质的影响。结果表明,施肥能提高辣椒季和大白菜季的产量,2/3化肥氮+1/3有机肥氮处理产量高,分别为辣椒7 808 kg/hm~2,大白菜65.18 t/hm~2;施肥能改善土壤物理性质,耕种和施用有机肥均可降低土壤容重,且施有机肥可提高土壤含水量。施肥后土壤中脲酶、碱性磷酸酶和转化酶的活性均提高,不同施肥处理的土壤转化酶和过氧化氢酶活性、pH、有机质含量无明显差异,土壤的EC、矿质态氮、有效磷和速效钾含量显著提高。综合考虑作物产量和土壤理化性质、肥料利用率及土壤酶活性,推荐2/3化肥氮+1/3有机肥氮施肥。更多还原

【Abstract】 The effects of different fertilization treatments on crop yields and soil physical and chemical properties of pepper-cabbage rotation system were studied. The results showed that fertilization could increase the yield of pepper and Chinese cabbage,and the yield of 2/3 chemical fertilizer nitrogen+1/3 organic fertilizer nitrogen treatment was high,which was 7 808 kg/hm~2 for pepper and 65.18 t/hm~2 for Chinese cabbage. Fertilization could improve soil physical properties,cultivation and application of organic fertilizer could reduce soil bulk density,and application of organic fertilizer could increase soil water content. After fertilization,the activity of urease,alkaline phosphatase and invertase in the soil were all increased. There was no significant difference among soil invertase and catalase activity,pH,and organic matter content in different fertilization treatments. Soil EC,mineral nitrogen,and available phosphorus and the content of available potassium were significantly increased. Considering crop yield,soil physical and chemical properties,fertilizer utilization rate and soil enzyme activity,2/3 fertilizer nitrogen+1/3 organic fertilizer nitrogen was recommended.更多还原