摘要
采用田间试验研究了嘉兴市南湖区稻麦轮作模式下不同施肥处理对晚稻养分吸收、分配的影响。结果表明,氮肥是限制稻麦轮作模式下晚稻产量的主要因素。施肥能促进植株对氮、磷、钾的吸收,氮、磷主要存在于子粒中,而86.51%～91.69%的钾被秸秆吸收。施肥会降低子粒中氮的分配率,磷、钾则有所提高。氮、磷、钾肥配施处理中氮肥、钾肥当季利用率分别为52.3%、51.7%,而磷肥仅为6.2%,每百公斤子粒消耗的氮肥为1.67～2.31 kg,磷肥为0.39～0.48 kg,钾肥为1.58～2.19 kg。
A field experiment was conducted to investigate the effects of different fertilization patterns on late rice nutrient uptake and distribution under rice-wheat rotation system in Nanhu district of Jiaxing city.The results showed that nitrogen was the main factor in rice production.Fertilization could promote plant for N,P,K absorption;N and P were mainly in grain,while K（86.51%～91.69%） was mainly in stalk.N distribution in the grain reduced with fertilizer application,but P and K would increase.The N and K utilization efficiency were 52.3% and 51.7%,thus the P utilization efficiency was only 6.2% in the NPK fertilizer treatment.Meanwhile,the amount of N,P and K that every 100 kg grain need were 1.67～2.31 kg,0.39～0.48 kg and 1.58～2.19 kg.
出处
《湖北农业科学》
北大核心
2012年第17期3699-3702,共4页
Hubei Agricultural Sciences
基金
农业部测土配方施肥补贴资金项目(2009-2011)
关键词
稻麦轮作
晚稻
养分吸收和分配
肥料利用率
rice-wheat rotation
late rice
nutrient uptake and distribution
fertilizer utilization ratio
