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时间:2020-06-20
《红壤旱地有机肥不同施用量对春玉米生物学特性及产量的影响.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、土壤肥料l植物保护l环境气象红壤旱地有机肥不同施用量对春玉米生物学特性及产量的影响徐一兰,刘唐兴,蒋志鹏(1.湖南生物机电职业技术学院,湖南长沙410127;2.湖南省永州市农业局,湖南永州425000)摘要:以当地常规施肥模式(CK)为对照,研究了红壤旱地有机肥不同施用量有机无机配施模式(T1:常规施肥+有机肥施用量7500kg/hm,T2:常规施肥+有机肥施用量11250kg/hm,T3:常规施肥+有机肥施用量15000kg/hm,T4:常规施ME+有机肥施用量18750kg/hm)对春玉米生物学特性及产量的影响。结果表明:春玉米主要生育期,
2、各处理单株叶面积和叶面积指数大小顺序为T4>T3>T2>T1>CK,均显著(P<0.05)高于对照;抽雄期和成熟期,T4和T3处理均显著(尸<0.05)高于其他处理。拔节期、抽雄期和成熟期,T4和T3处理植株根系干质量、茎干质量均显著<0.05)高于其它处理;T1、T2、T3和T4处理植株叶干质量与对照的差异达显著水平(0.05)T2、T3和T4处理的穗长均明显高于对照;T4处理的行粒数、每穗粒数和百粒质量均显著高于(P<0.05)对照;TI~T2处理的行粒数、每穗粒数和百粒质量均高于对照,但均无明显差异。春玉米产量顺序为T4>T3>T2>T1>
3、CK,T1、T2、T3和T4处理的籽粒产量分别比对照增加9.93%、16.57%、22.77%和24.72%。有机无机配施有利于改善春玉米的产量构成因素,提高春玉米产量和经济效益。关键词:春玉米;施肥模式;有机肥;生物学特性;产量中图分类号:$513.062文献标识码:A文章编号:1006-060X(2014)11-0031-04EffectsofDifferentOrganicFertilizerTreatmentsonBiologicalCharacteristicsandYieldofSpringMaizeinRedSoilUplandXU
4、Yi.1an,LIUTang.xing,JIANGZhi—peng{1.CollegeofBiologicalandElec~omechanicalPolytechnic,Changsha410127,PRC2YongzhouBureauofAgriculture,Yongzhou425000,PRC、Abstract:Undercombinedapplicationoforganicandchemicalfertilizer,thisstudywasconductedtodeterminethebiologicalcharacteristics
5、.yieldandyieldtraitsofspringmaizeinredsoiluplandwithdifferentorganicfertilizertreatmentsfortheassessmentoffertilizationmodes.Thetreatmentsincludedconventionalfertilizationplusorganicfertilizerappliedat7500kg/hm2(T1),11250kg/hm(T2),15000kg/hm2(T3),18750kg/hm2(T4),andtheconvent
6、ionalfertilization(CK).TheresultsshowedthatleafareaperplantandleafareaindexofthetreatmenteachwereT4>T3>T2>T1>CK.AndthoseofT4,T3,T2andT1weresignificantlyhigher(P7、attheheadingandmaturingstages.ThedryweightofrootandstemattheT4andT3wassignificantlyhigher(P<0.05)thanthatofothers,whiletheT1、T2、T3andT4hadtheleafdryweightsignificantlymore(P<0.05)thanthatoftheCKatelongating,headingandmaturingstages,respectively,appliedorganicfertilizersignifi8、cantlyincreasedtheearlength,kernelnumber,numberofgrainsperearand100一
7、attheheadingandmaturingstages.ThedryweightofrootandstemattheT4andT3wassignificantlyhigher(P<0.05)thanthatofothers,whiletheT1、T2、T3andT4hadtheleafdryweightsignificantlymore(P<0.05)thanthatoftheCKatelongating,headingandmaturingstages,respectively,appliedorganicfertilizersignifi
8、cantlyincreasedtheearlength,kernelnumber,numberofgrainsperearand100一
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