基于模糊聚类分区施肥对棉花干物质积累及产量的影响

Effects of Regionalized Fertilization of Cotton on Dry Matter Accumulation and Yield of Cotton Based on Fuzzy Clustering Analysis

【目的】在GIS支持下对农八师石河子总场滴灌棉田采取分区管理施肥,研究其对棉花干物质积累和产量的影响。【方法】以土壤硝态氮含量为变量进行土壤氮素养分精确分区,并在棉花生长的五个主要生育期进行分区施肥管理。分析分区管理与常规管理对棉花干物质积累及产量的影响效应。【结果】分区管理施肥有利于棉花干物质的积累及棉花增产,分区施肥管理区棉花干物质积累量及产量均高于常规管理区,且差异显著,其中干物质积累增加29.52%,增产22.47%。【结论】分区管理施肥可以促进棉花干物质积累,对棉花各器官中干物质积累比例表现为铃>茎>叶,并且分区施肥管理区棉花干物质积累量及产量均高于常规管理区,且差异显著,分区管理施用氮肥显著增加了棉花单株铃数和单铃重从而提高了棉花产量,最高增产可达1 551.1 kg/hm^2。

[ Objective] This project aims to study the impact of dry matter accumulation on the yield of cotton by using GIS software in drip irrigation cotton field of Agricultural Production Division 8 of Shihezi to take partition management fertilization. [ Method ] The content of soil nitrate was taken as variables of soil nitrogen nutrient precision division, and regionalized fertilization management in the five main stages of the cotton growth was carried out. [ Result] The effect of regional management and conventional management of cotton dry matter accmnulation and yield was analyzed. The results showed that regionalized fertilization management was better for cotton dry matter accumulation and its yield, which were higher by regionalized fertilization management than those by conventional management. Actually, the gap was wide. The dry mnatter accumulation was increased by 29.52% , and the yield increased by 22.47%. [ Conclusion ] The results show that, fertilization management can promnote cotton dry matter accumulation, Proportion of dry mnatter accumulation in different organs is boll 〉 stem 〉 leaf, regionalized fertilization management, and significant difference. Regionalized fertilization management significantly increased the cotton boll number and boll weight to improve cotton production. The highest yield is 1 551. l kg/hm2.