不同密度水平下棉株各时期含水率分析  

Analysis of Rate of Moisture Content in Cotton Plants in Every PeriodUnder Different Densities

作　　者：彭苗苗[1] 田绍仁[1] 夏绍南[1] 张丽娟[1] 张绍银[1] 高胜[1] 高红兵[1] 刘慧君[1] 赵娟[1] 

机构地区：[1]江西省棉花研究所,江西九江332105

出　　处：《江西棉花》2011年第4期14-18,共5页Jiangxi Cottons

基　　金：国家公益性行业科研专项一棉花简化种植节本增效生产技术研究与应用(3-5-14)

摘　　要：试验设12 000株/hm2、21 000株/hm2、30 000株/hm2、39 000株/hm2、48 000株/hm2和57 000株/hm26个密度水平,分别研究棉花单株、叶、茎和根在不同时期的含水率并作相互比较。结果表明:从密度水平来看,当48 000株/hm2时,单株含水率可达到较高水平,最高为82.92%;而不同密度水平下棉花单株、叶、茎和根的含水率随时间变化的趋势大致相同,均在6月初时最低,7月初和7月底时分别出现峰值。单株和棉叶含水率均以7月下旬最高(分别为82.69%～83.40%和81.92%～82.98%),而棉茎和棉根含水率均以7月初最高(83.50%～86.47%,77.10%～78.60%)。棉株各器官间含水率随时间而变化,6月初至7月中旬:棉茎>棉叶>棉根;7月下旬及以后:棉叶>棉茎>棉根。The research analysis the rate of moisture content of individual cotton plant,leaf,stem and root under different times and six densities（12 000 plants/hm2,21 000 plants/hm2,30 000 plants/hm2,39 000 plants/hm2,48 000 plants/hm2 and 57 000 plants/hm2）,and then compare with each other.The results indicated that the rate of moisture content of individual plant would reach high degree（82.92%） in the density of 48000plants/hm2.Under different density level,the rate of moisture content of individual plant,leaf,stem and root are separately the same tendency along with time variation,in the beginning of June is lowest,in the beginning and end of July achieves two peak values respectively.Individual plant and leaf reach the highest degree（82.69%～83.40% and 81.92%～82.98%） in end of July.Stem and root have maximum value（83.50%～86.47% and 77.10%～78.6%）in the beginning of July.The relationship of moisture content between cotton organs change along with the time,from the beginning of June to the middle of July： stemleafroot;in the end of July and so on： leafstemroot.

关 键 词：棉株 含水率 密度 时期 

分 类 号：S562.044[农业科学—作物学]