棉花植株氮素含量与干物质积累的相关性  

Study on the Correlation between Nitrogen Content and Dry Matter Accumulation in Cotton

作　　者：娄善伟 马腾飞 托合提.艾买提 张怀军 王大光 边洋 司地克江 张鹏忠 LOU Shan-wei;MA Teng-fei;Tuoteti Aimait;ZHANG Huai-jin;WANG Da-guang;BIAN Yang;Sidikejiang;ZHANGPeng-zhong(he National Cotton Engineering & Technology Research Center, Urumqi 830091, China;Jinghe County Agricultural Technology Extension Center, Jinghe Xinjiang 833300, China)

机构地区：[1]国家棉花工程技术研究中心,乌鲁木齐830091 [2]精河县农业技术推广中心,新疆精河833300

出　　处：《新疆农业科学》2017年第12期2182-2189,共8页Xinjiang Agricultural Sciences

基　　金：新疆维吾尔自治区自然科学基金项目"不同氮效棉花品种植株氮素阈值及其影响因子研究"(2017D01A07)~~

摘　　要：【目的】研究棉株氮素含量与干物质积累之间的相关性,为探寻植株氮素转化机理提供参考依据。【方法】试验设置4个不同品种,测定植株氮素含量及各器官干物质。【结果】不同棉花品种的氮素含量和干物质积累均存在一定的差异,杂交棉具有一定的生长优势;各棉花品种在营养生长阶段单株氮素的积累量与干物质积累呈显著正相关,其中天杂2号的相关系数达到了0.999 8,进入生殖阶段二者不再有相关性;氮素含量与干物质积累在蕾期以叶片最高,分别达7.26 g/hm^2和955.13 kg/hm^2,花铃期后生殖器官最高,品种以天杂2号最高,为24.64 g/hm^2和11 750.64 kg/hm^2。【结论】杂交棉在氮素和干物质积累上具有一定的优势,营养生长阶段氮素含量与干物质积累量呈线性关系,且叶片占重要比重。【Objective】To find out the correlation between dry matter accumulation and nitrogen content of cotton and provide reference for exploring the mechanism of nitrogen transformation.【Method】The experiment was conducted to determine the nitrogen content and dry matter of organs in the 4 different varieties.【Result】There were some differences in nitrogen content and dry matter accumulation among different cotton varieties,and hybrid cotton had certain growth advantage; Accumulation of nitrogen in each growth stage of cotton varieties in plant nutrition and dry matter accumulation was positively related; Among them,the correlation coefficient of Tian Za No. 2 reached 0. 999,8. In the reproductive stage,there was no correlation between the two; Nitrogen content and dry matter accumulation were highest in leaves at bud stage,reaching 7. 26 g/hm^2 and 955. 13 kg/hm^2,respectively; The reproductive organs reached the highest during the late blooming period; Among the different varieties,Tian Za No. 2 was the highest in nitrogen content and dry matter accumulation,reaching 24. 64 g/hm^2 and 11,750. 64 kg/hm^2. 【Conclusion】The hybrid cotton has certain advantages in nitrogen and dry matter accumulation,and nitrogen content in vegetative growth stage is linearly related to dry matter accumulation,and leaves occupy an important proportion.

关 键 词：棉花 氮素 干物质积累 相关性 

分 类 号：S562[农业科学—作物学]