摘要
以4个不同类型水稻品种为材料,研究了在西昌和雅安2种不同生态条件下栽培密度对水稻氮磷钾营养特性的影响。结果表明:西昌点水稻成熟期氮和磷的平均总积累量小于雅安点,钾平均总积累量略高于雅安点;氮、磷、钾的收获指数、稻谷生产效率和干物质生产效率均表现为西昌点明显高于雅安点。随密度增加,水稻氮、磷、钾总积累量增加,不同栽培密度水平下氮素干物质生产效率无显著差异,但氮、磷、钾的收获指数、稻谷生产效率及磷、钾的干物质生产效率均随密度增加呈减小的趋势。
Using four different types of rice varieties including Jinyou 527 （indica hybrid rice）, Changmi 011 （in- dica inbred rice）, Jiuyou 418 （japonica hybrid rice） and Hexi 39 （japonica inbred rice） as the materials, the effects of planting density were studied on the uptake characteristics of nitrogen, phosphorus and potassium nutri- ents under two different ecological conditions at Xichang and Ya＇an. The results showed that the total nitrogen ac- cumulation（TNA） and the total phosphorus accumulation （TPA） at maturity stage in Xicbang were less than those in Ya＇an, but the total potassium accumulation （TKA） at maturity stage in Xichang was slightly higher than that in Ya＇an. The harvest index, use efficiency for grain production and use efficiency for biomass production of nitrogen, phosphorus and potassium in Xichang were significantly higher than those in Ya＇an. With the planting density in- creased, the total accumulation of N, P and K increased at maturity stage. There was no significant difference for the nitrogen use efficiency for biomass production （NDMPE） among different planting density levels, but the har- vest index and the use efficiency for grain production of nitrogen, phosphorus and potassium and the use efficiency for biomass production of phosphorus and potassium decreased with the density increased.
出处
《杂交水稻》
CSCD
北大核心
2015年第3期58-65,共8页
Hybrid Rice
基金
四川省教育厅重点项目(13ZA0270)
四川省教育厅青年基金项目(07ZB081)
关键词
水稻
生态条件
栽培密度
氮
磷
钾
吸收利用
rice
ecological condition
transplanting density
nitrogen
phosphorus
potassium
uptake and utilization
