栽培方式对玉米产量及品质影响的分析

《栽培方式对玉米产量及品质影响的分析》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、本研究通过对两个不同株型品种分别在两种不同种植方式和五个不同密度下栽培，探讨了种植方式和群体密度对玉米产量形成及品质的影响。旨在探索高纬度地区提高玉米产呈、改善其品质的新途径，为玉米高产优质栽培提供理论参考。b式验结果表明，玉米单株绿色叶面积在整个生育进程中呈单峰曲线变化，植株干物质积累动态里”S”形曲线变化，但不同栽培方式和群体密度条件下，玉米各生育阶段叶面积、LAI、LAD、群体内的光份布、地上干重、籽粒脫水速率、籽粒产量、籽粒的营养物质含量等均存在明显差异。■十大垄双行栽培方式可以改善玉米禹謹体结构，减少株闰竞争，促进个体生长发育，玉米植株的叶面积、LAI、LAD及干重均有不同程度增长:

2、群体光合性能增强，籽粒灌浆速率高，成熟期脱水速度快，增产效果显著.籽粒营养物质的百分含量除蛋白质外，淀粉和脂肪的含量均有提高趋势:玉米籽粒淀粉、蛋白质、脂肪的百粒含量都明显增加。不同密度条件下，玉米群体光合性能、干物质积累、产量及品质等存在明显差异，低密度下玉米叶面积、LAI、LAD及单株产量较高.在…定范围内，随着密度的增长，降低了个体的生产力，但群体作用有所加强。关键询：栽培方式玉米向oMayy厶浮光合性能产量品质TheStudyonEffectsofYieldandQualityinMaizeunderDifferentCultivationMethodsAbstractTwovarie

3、tieswithdifferentplanttypescultivatingrespectivelyundertwodi仔erentcultivationmethodsandfivedifferentdensitieswerestudiedinthisresearch.币lem勾orobjectwastoexploreeffectsofcultivationmethodanddensityofpopulationonyieldformationandqualityofmaize,furtherfoundoutnewmethodth刽couldenhanceyieldandimprovequal

4、ityofmaizeinhighlatitudeareas.TheresultsofresearchshowedthatgreenleafaxiIofsinglemaizeplantchangedwithunimodalcurve,andaccumulativetrendofplantdrymattervariedwithnSncurve・Atthesametime,therewereobviousdifferenceamongleafaxH,LAI,LAD，lightdistributioninpopulation，drymatterweightoverground,dehydrationr

5、ateofgrain,yieldofgrain,nutrientsubstancecontentofgrainatdifferentgrowingperiodsunderdifferentcultivationmethodsanddensitiesofpopulation.Thecultivationmethodofmacro.ridgeandtwo-rowmightimprovepopulationstructureofmaize,reduceinter-plantcompetition,promoteindividualgrowthanddevelopment,increaseleafax

6、i1，LAI，LADanddrymatterweighttodiWerentdegree.Whenphotosynthesispotentialofpopulation>grainfillingrateanddehydrationspeedinmatureperiodwe陀improved，theincreasingofyieldwouldbesignificant.r

7、lepercentageofgrainnutrientsuhstances,exceptforprotein,havesignificantlyincreasingtendency.Starchcontent,proteinc

8、ontentandfatcontentper100grainsofmaizeallwereincreasedobviously，totalyieldofnutrientsubstancesperunitareawereenhancedsignificanty.Thereweresignificantdifferenceamongphotosyn出esispotentialof.population