Page 22 - 《华农农业大学学报》2020年第2期

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华 中 农 业 大 学 学 报 第 ３９ 卷

Effectsofstrawreturnin g andcra y fishfeedin g onrice g rowth

andnutrientu p takeinriceＧcra y fishecos y stem

１ １ １ , ２ １ , １
LILina , YANLinlin , CAOCou g ui , JIANG Yan g WANGJin p in g
１．Shuan g shuiShuan g lüInstitute / Colle g eo fPlantScienceandTechnolo gy ,

Huazhon gA g riculturalUniversit y Wuhan４３００７０ , China ;
,
,
２．HubeiCollaborativeInnovationCenter f orGrainIndustr y Jin g zhou４３４０２５ , China

Abstract Inordertoex p lorecharacteristicsofrice g rowthanddevelo p ment , hotos y ntheticchan g e
p
rulesandnitro g ennutrientabsor p tioninthericeＧcra y fishs y stem underdifferentstrawreturnin gand
２
/
(
feedin g treatment , ７２００k ghm strawreturnin gamountandnofeedin g NS＋NF , CK ) andtreatments
２
/
２
/
of１２２００k ghm strawreturnin g amount ( S ) and１６００k ghm feedin g amount ( F ) wasusedtostud y
chan g esofcharacteristicsofriceg rowthanddevelo p ment , leaf p hotos y nthetic , o p ulationcano pystrucＧ
p
ture , nitro g enutilizationefficienc yandy ieldatmiddleandlate g rowthsta g eofrice．Theresultsshowed
thatS＋Fsi g nificantl y increasedthey ield , andthenumberofeffectivep anicle , theseedＧsettin grateand
thenumberofg rainsp ertassel．Thenitro g encontentinricematurep lantswasalsosi g nificantl yinＧ
２
creased．Theactualy ieldofNS＋Ftreatmentwas９．３４t / hm , bein gthehi g hestand３．４３％Ｇ１１．７２％
hi g herthanthatofothertreatment．Streatmentwasmainl yeffectiveinthelateg rowthsta g eofrice ,
whichdela y edthesenescenceofriceleavesandreducedthedecreaseoftheintensit yofrootwoundflow
,
inthematuresta g e．Ftreatmentincreasedthetillernumberofrice , romotedtillerstabilit ysi g nificantl y
p
reducedthetrans p irationrateofrice , andincreasedtheaccumulationofdr ymatterinthematuresta g eof
rice．NStreatmentsi g nificantl y increasedthe p hotos y ntheticrateandtrans p irationrateofrice．StrawreＧ
turnin g tothefieldandfeedin g treatmenthasitsownadvanta g es．Infarmin gp ractice , whentheamount
ofstrawreturnedtothefieldisrelativel y lar g e , a pp ro p riatefeedin g cansu pp lementnitro g enformicrobiＧ

aldecom p ositionofstrawandp lant g rowth．
Ke y words riceＧcra y fishcoＧculture ; inter g atedfarmin gof p lantin g andbreedin g inp add y field ; ecoＧ
;
;
lo g icala g riculture ; strawreturnin g feedin g p hotos y ntheticcharacteristics ; nitro g ennutrientabsor p Ｇ
;
tion ; reenp lantin gandbreedin g g reenp roductiontechni q ues
g
( 责任编辑: 张志钰)