欢迎来到天天文库
浏览记录
ID:53072332
大小:592.19 KB
页数:11页
时间:2020-04-16
《磷钾对套作大豆干物质积累与分配及产量的影响-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、浙江大学学报(农业与生命科学版)38(3):318-328,2012JournalofZhejiangUniversity(Agric.8LLifeSci.)文章编号:1008—9209(2012)03—0318—11DOI:10.3785/j.issn.1008—9209.2012.03.013-磷钾对套作大豆干物质积累与分配及产量的影响雷婷,向达兵,郭凯,杨文钰,刘增禹,陈小容(四川农业大学农学院,四川雅安625014)摘要在“玉/豆”套作模式下,采用随机区组设计,研究磷、钾营养对套作大豆干物质积累、分配及产量的影响.结果表明:完熟期套作大豆干物质积累总量及根、茎、叶、
2、荚各器官干物质积累量均随施钾量增加而增加,随施磷量增加呈先升高后降低的趋势,且都以P2K3(P2O17kg.hm_。,K2Ol12.5kg.hm)处理最高;茎秆、叶片干物质积累量随生育时期均呈单峰曲线变化,各时期干物质积累量随施钾、施磷量增加的变化与干物质积累总量表现一致(苟期除外);完熟期干物质向荚果的分配比例随施钾量增加而增加,随施磷量增加呈先增加后减少的趋势,而向茎秆和叶片则表现为相反的趋势;增施磷、钾肥能够提高营养器官干物质向荚果的转移量、转移率及其对荚果的贡献率和产量,以PK。产量最高,为2832.O4kg.hm_,显著高于其他处理.关键词磷;钾;套作大豆;干物质
3、积累与分配;产量中图分类号S565.1;S143文献标志码AIElTing,XIANGDa—bing,GUOKai,YANGWen-yu,LIUZeng—yu,CHENXiao—rong(CollegeofAgronomy,SichuanAgriculturalUniversity,Yaan,Sichuan625014,China)Effectsofphosphorusandpotassiumfertilizersondrymatteraccumulation,distributionandyieldofrelaystripintercroppingsoybean.Jour
4、nalofZhejiangUniversity(Agric.&LifeSci.),2012,38(3):318—328AbstractTheeffectsofphosphorus(P)andpotassium(K)fertilizersondrymatteraccumulation,distributionandyieldofsoybeanwerestudiedbyrandomizedblockdesigninrelaystripintercroppingsystemofmaize—soybean.Theresultsshowedthatdrymatteraccumulat
5、ionsofwholeplantandeachorgan(root,stem,leafandlegume)atthefullmaturestageallincreasedwithincreasingKapplicationamount,whileincreasedatfirstandthendecreasedwiththeincreaseofPapplicationamount,andthedrymatteraccumulationsofwholeplantandeachorganallreachedthehighestunderthePzK3(P2O517kg.hm,K2
6、O112.5kg.hm)treatment.Thechangesofdrymatteraccumulationsofstemsandleavesinthewholeperiodshowedasinglepeakcurve,andthechangesofdrymatteraccumulationinwholeperiodwiththeincreaseofKandPapplicationamountwereallsimilartothatofdrymatteraccumulationofwholeplant(exceptseedlingstage).Thedistributio
7、nproportionofthedrymatterfromplanttolegumesincreasedwiththeincreaseofKapplicationamount,whilethedistributionrateincreasedatfirstandthenreducedwiththeincreaseofPapplicationamount.Butthechangesofthedistributionrateof收稿日期:2011-0803基金项目:国家重点基础研究发展计划“973”资助项目(2011C
此文档下载收益归作者所有