變量追施氮肥對冬小麥籽粒產量及蛋白品質的影響.pdf

1、中國農業(yè)大學碩士學位論文變量追施氮肥對冬小麥籽粒產量及蛋白品質的影響姓名：李小靜申請學位級別：碩士專業(yè)：作物栽培與耕作學指導教師：王志敏薛緒掌20030501ABSTRACTTIlispaperstudyingtheinfluenceofvariablerateapplyingofnitrogenfertilizertothegrAinyieldandproteinqualityofwinterwheatiSpartofthepreci

2、sionagriculturedemonstrationprojectconductedbytheAgricultureandForestryScienceCollegeofPekingcity111cpurposeistochecktheresultofvariablerateapplyingofnitrogenfertilizerprovidingexperimentsorlessonsforthedevelopingofthech

3、aracteristicpreciseagricultureinChinaneexperimentwasconductedfrom20019to20026atXiaoTangShanthetestingSpeciesJingDong11T1letestincludetwoparts：smallscalevadableratefertifizertheunit1213andmidscalevariableratefertilizerthe

4、unit18‘18total100ThesmallscaletestcalculatethepotentialyieldbyNDVIthen蒯vetheapplyingrateoffertilizerfromthepotentialyieldVariableratefertilizerⅥ船appliedatthetestplotswhileallaverageratewasappliedatthechackplotsAsthemidse

5、aleW&SconcernedsoilnutrientsweremeasuredbeforeplantWiththeyieldmapoflastyearandsoftNspatiMvariabilitymapbeforeplanttheapplyingrateoffertilizerattestplotswascertain，whileatthecheekplots，鋤averageratewasapplyingTheresultsof

6、thesmallscaletestshow(1)Yieldshavesmallerspatialvariabilityatthecheekplotsandalmosthavethesamechangetrendwiththepredictedyields(2)Atthetestplotsyieldshavemoresignificantvariability，themeasuredyieldswerenotconsistentwitht

7、hepredictedyields，andobviousrelationwasnotfoundbetweenthem(3)Theapplyingrateof觚lizerhasenlargethevariabifityofyieldbutham’tsignificantcorrelationwiththeyieldThesmallervariabilityandsimilarchangetrendatthecheckplotsofthes

8、mallscaletestindicated(1)Tksoilnutrientsatthedealingunitshavethesmallvariability(2)It’sviabletopredictedthecropyieldsbythegrowingstatusoftheexperiodIfalltheseindicationswerecorrect淝callexplaintheproblemthatyieldshavemore

9、significantvariabilityandthemeasuredyieldsw讎notconsistentwiththepredictedyields，thepossibleexpectationisthatbec黜thesoilnutrientsatthedealingunitshavethesmallvariabilityandNfertilizerwasnotthelimitedfactortoyieldthevariab

10、ierateapplyingoftheNfertilizerⅥ髑onlyenlargedthevariabilityofthesoilnutrientswhichweresmalleroriginally，andbecausetheinteractionbetweenNandotherfertilizers，thechangetrendofyieldsleftthepredictionItCanconcludethatthebestap

11、plyingwayofthefertilizeratthesmallscaleunitisunitedapplyingTheresultsofthemidscaletestshow(1)allsoilnutrientsbeforeplanthavesignificantspatialvariability，buttheamountandthechangescaleinsoilweredifferentandNnutrienthashig