多效唑和营养元素配施对水稻根系生长和产量的影响  

Effects of PP333 and Nutrient Elements Applied on Yields and Root Growth of Rice

作　　者：彭智平[1] 黄继川[1] 于俊红[1] 杨少海[1] 李文英[1] 

机构地区：[1]广东省农业科学院土壤肥料研究所广东养分资源循环利用与耕地保育重点实验室,广州510640

出　　处：《中国农学通报》2011年第5期234-237,共4页Chinese Agricultural Science Bulletin

基　　金：国家支撑计划专题(2008BADA4B04-09);广东省重点科技专项(2009A020101003);广东省农业攻关项目(2008A020100021)

摘　　要：通过田间试验研究了叶面施用营养元素和多效唑对水稻产量、根系以及养分含量的影响。结果表明:营养物质与多效唑配施效果最佳,能增加根生物量,提高根系活力,促进水稻对养分的吸收,测产结果显示该处理水稻有效穗为10.6穗/株,每穗实粒数为94粒/穗,结实率为91.6%,千粒重为19.96g,较对照增产11.89%;且能够调节水稻株高,增强抗倒伏能力,增加水稻植株和谷粒中磷和钾的积累,为多效唑和营养元素复配在水稻上的应用提供研究依据。Effects of PP333 or/and foliar nutrients on yield, root growth and nutrient content of rice were studied by field experiment. Results showed that PP333 combining with foliar nutrients have the best effects. This treatment could increase root biomass and root activity to improve the nutrients accumulation. The yield results demonstrated that rice sprayed with PP333 and nutrients had effective grains with 10.6 No./hill, seed setting rate with 94 grains/panicle, 1000-grain weight with 19.96 g, and yield by 11.89% compared with the control. Furthermore, the above treatment could enhance the lodging resistance and obviously increased root biomass and root activity to improve phosphorus, potassium accumulation in rice stem, leaves and grains. This research provides valuable references to technique of PP333 and nutrients applying on rice.

关 键 词：多效唑 营养元素 水稻 产量 

分 类 号：S143.8[农业科学—肥料学]