新疆农业科学2017，Vol.54Issue(11)：2006-2012,7.DOI:10.6048/j.issn.1001-4330.2017.11.006
不同种植密度下棉花对钾素吸收、分配和利用研究
Study on K Absorption, Distribution and Utilization of Cotton under Different Planting Densities
摘要
Abstract
[Objective] To explore the difference between cotton plant potassium absorption,distribution and utilization under different cotton planting densities and clarify the relationship between potassium and cotton yield.[Method] The experiment was conducted to study the distribution and variation of potassium content and organ potassium content in plants by setting 5 (A1-A5) different planting densities.[Result]The potassium absorption and utilization was influenced by density,with the increase of density,plant K content decreased gradually,but in group accumulation,A3 treatment's content was the highest before boll opening,reaching 483 kg/hm2.Potassium distribution ratio in different organs,early flowering stem and leaf potassium K ratio accounted for more than 70％,and the highest proportion of stem,bud to boll opening,the lowest proportion;leaf potassium ratio became lower and the highest with the density increasing trend,while the bell potassium content in A3 treatment was the highest,up to 29.36.Density was the main factor affecting the yield.With the increase of density,the yield was first increased and then decreased,In A3 treatment,the highest lint yield was 3,112.11 kg/hm2 and the correlation coefficient was 0.979,2,but it was also consistent with the higher trend of the group potassium accumulation at the stage of boll opening and rapid accumulation of A3 value.[Conclusion]The correlation between density and yield is two times,and it can affect the absorption and utilization of potassium,but also it is also related to cotton yield,K accumulation rate,K content in the population,potassium content in reproductive organs.关键词
棉花/密度/养分分配/钾素Key words
cotton/density/nutrient allocation/potassium分类
农业科技引用本文复制引用
娄善伟,王大光,马腾飞,托合提·艾买提,边洋,张鹏忠..不同种植密度下棉花对钾素吸收、分配和利用研究[J].新疆农业科学,2017,54(11):2006-2012,7.基金项目
The Key Technology R &D Program of Xinjiang Uygur Autonomous Region "The technical efficiency of cotton cost system integration and demonstration application " (2016B01001-5) （2016B01001-5）
自治区重点研发计划项目“棉花节本增效技术体系集成与示范应用”(2016B01001-5) （2016B01001-5）
