| 控释氮肥对棉花生长发育及产量的影响 |
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| 引用本文： | 李学刚,孙学振,宋宪亮,陈二影.控释氮肥对棉花生长发育及产量的影响[J].山东农业科学,2009(6):79-81. |
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| 作者姓名： | 李学刚 孙学振 宋宪亮 陈二影 |
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| 作者单位： | 山东农业大学农学院/作物生物学国家重点实验室,山东,泰安,271018 |
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| 基金项目： | 国家科技支撑计划，农业部公益性行业专项，山东省农业重大应用技术创新项目，山东省农业良种工程重大课题，山东省自然科学基金 |
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| 摘 要： | 以鲁棉研28号为材料，研究了控释氮肥对棉花生长发育及产量的影响，结果表明：与生产对照CK2相比，不同控释氮肥处理的棉花最终果枝数、果节数及单铃重无显著差异。100％控释氮肥处理对棉花前期生长具有一定的不利影响：苗期的单株叶面积、倒四叶叶面积、地上部干重和6月17日的株高均显著降低（P〈0．05），但苗期叶片数和中后期（7／20—9／15）棉花株高无显著差异；单株结铃数增加0．77个（P〈0．05），籽棉产量和皮棉产量分别增加6．2％和6．4％（P〈0．05）。50％速效与50％控释氮肥基施处理，苗期倒四叶叶面积和7月2日果节数显著增加，苗期叶片数、单株叶面积、地上部干重和不同时期的株高均无显著变化；衣分显著降低，籽棉和皮棉产量及产量构成均无显著变化。控释棉花专用BB肥对棉花苗期生长有一定的促进作用，促进了棉花早现蕾，从而增加了中后期（7／20-9／15）棉花株高，单株结铃数增加0．84个，籽棉产量增加5．0％，均差异极显著；但衣分无显著差异。
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| 关 键 词： | 控释氮肥 生长发育 产量 |
Effects of Controlled Release N Fertilizer on Growth and Yield of Cotton |
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| LI Xue-gang,SUN Xue-zhen,SONG Xian-liang,CHEN Er-ying.Effects of Controlled Release N Fertilizer on Growth and Yield of Cotton[J].Shandong Agricultural Sciences,2009(6):79-81. |
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| Authors: | LI Xue-gang SUN Xue-zhen SONG Xian-liang CHEN Er-ying |
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| Institution: | LI Xue - gang, SUN Xue - zhen, SONG Xian - Hang, CHEN Er - ying ( College of Agronomy, Shandong Agricultural University/State Key Laboratory of Crop Biology,Tnian 271018 ,China) |
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| Abstract: | The effects of controlled release N fertilizer on growth,development and yield of Lumianyan 28 were studied under field conditions.The results showed that,compared with CK2,the different controlled release N fertilizer treatments had no significant effects on main-stem number,fruiting-branch number and single boll weight.100%PCU used as base fertilizer significantly reduced leaf area per plant,inverse fourth leaf area,dry weight of seedling stage and plant height on June 17,but its effects on leaf number per plant at seedling stage and plant height from July 20 th to September 15th were not significant;bolls per plant significantly increased by 0.77;seed cotton yield and lint cotton yield increased by 6.2% and 6.4 % respectively(P<0.05).50% PU and 50% PCU used as base fertilizer enhanced inverse fourth leaf area at seedling stage and fruiting-branch number on July 2nd,but its effects on leaf number per plant,leaf area per plant,dry weight at seedling stage and plant height of different stages were not significant.50% PU and 50% PCU used as base fertilizer could significantly reduce lint percentage,however,there were no obvious effects on seed cotton yield,lint cotton yield and yield components.CRBBF improved the growth of seedling cotton and the budding of cotton,therefore the plant height from July 20th to September 15th were increased significantly;Bolls per plant increased by 0.84,while yield of seed cotton increased by 5.0%,but there was no significant effect on lint percentage. |
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| Keywords: | Controlled release N fertilizer Growth and development Yield |
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