【作者】 汤雷雷； 万开元； 李祖章； 陈防；

【Author】 TANG Lei-lei~(1,2),WAN Kai-yuan~1,LI Zu-zhang~3,CHEN Fang~(1*) (1.Wuhan Botanical Garden,Chinese Academy of Science,Wuhan,430074,China;2.Graduate School of CAS, Beijing,100049,China;3.Soils and Fertilizer & Resource and Environment Institute,Jiangxi Academy of Agricultural Sciences,Jiangxi,330200,China)

【机构】 中国科学院武汉植物园； 中国科学院研究生院； 江西省农业科学院土壤肥料与资源环境研究所；

【摘要】 水旱轮作田间定位试验条件下研究了连续4年(2005-2008)不同施肥模式对双季稻产量、养分吸收及经济效益的影响。结果表明,氮磷钾肥配施能显著提高水稻产量,长期定位有机无机肥配施增产效果明显。定位四年后(2008年),有机无机肥配施处理早稻和晚稻平均产量分别比未施肥处理增产135%和130%。肥料配施虽增加了支出,但提高了经济产出,其纯收益相对较高,以有机无机肥配施处理的纯收益最高。不同施肥模式显著影响水稻稻草、稻谷中氮钾含量,对氮含量影响相对较大。氮磷钾肥配施处理,特别是有机无机肥配施处理的养分吸收量最高,在土壤中的氮磷盈余也最少。随着产量的增加,稻草与稻谷中磷、钾含量相对比值有增大的趋势,表明水稻高产栽培条件下植株需要更大比例的磷钾养分。更多还原

【Abstract】 Effect of fertilization on double-rice yield,nutrient uptake and economic benefit under paddy-upland rotation was studied through a long-term field experiment during 2005 to 2008.The result showed that grain yields of the double-season rice were significantly increased by combined application of nitrogen(N),phosphorus(P) and potassium(K) fertilizers.The effect of chemical fertilizers plus organic fertilizer on grain yield became more apparent as the planting seasons continued.The yields of early and late rice under 1/2(M+F) treatment were 135%and 130%over the CK treatment.A relatively higher net incomes were obtained from the treatments of NPK and 1/2 (M+F) even with higher inputs.Different fertilizing patterns greatly affected nutrient contents of rice grain and straw.The chemical fertilizers plus organic fertilizer treatment promoted rice nutrient uptake and reduced residual N and P in the soil,compared with that in other treatments.With rice yield increasing,the rates and ratios of P and K in straw to that in grain were increased accordingly, which indicated that more and larger proportion of P and K supplies are required for high yield rice production.更多还原