【作者】 梁海福；

【导师】 徐建云； 陈超君；

【作者基本信息】 广西大学 ， 作物栽培与耕作学， 2004， 硕士

【摘要】 以新台糖22号为材料，通过对甘蔗种植行距为1.0m(处理A)、窄行宽株，行距为1.25m(处理B)、宽行窄株，行距1.5m(处理D)、宽窄行宽株，行距2.0m(处理C)、宽窄行窄株四种种植结构及其群体生长动态、生理生化特性、蔗茎产量和品质等方面的研究，试验结果表明： 一、群体生长动态方面：发芽率最高是处理C，为71.9％，最低是处理D，为68.3％；分蘖率最高是处理A，为55.5％，最低是处理C，为41.8％；整个生育期生长速率最快是处理C，其次是处理B，最慢是处理A；叶面积指数最大的是处理A，其次是处理B，最小的是处理D；有效茎数最多是处理A，为6155条，最少是处理C，为5265条，处理A与处理C之间差异达1％极显著水平，其余各处理之间差异不显著。 二、生理生化方面：叶绿素含量、净光合速率、蒸腾速率、硝酸还原酶活性、酸性转化酶活性等生理生化指标，在各处理的表现均是分蘖期较高，伸长期最高，工艺成熟期低，但各处理之间差异不显著；叶片可溶性糖含量从伸长期到工艺成熟期是逐渐升高，到工艺成熟期达最高；日积干物量从分蘖期至成熟期的变化为低→高→低→高的双广西大学硕士学位论文不同结构甘蔗高产群体生长动态及其生理研究峰曲线变化，最大峰值出现在伸长盛期，第二个峰值在工艺成熟期。 三、蔗茎产量及品质:每6“.7m，蔗茎产量最高是处理O，为91 69.87kg/666.7m，，最低是处理C，为7427.12kg/666.7m，，处理D与处理C之间差异达5%显著水平;蔗糖分最高是处理B，为1 5.46%，最低是处理D，为1 5.19%。各处理间差异不显著;各处理的还原糖分较低，均低于0.1%;蔗汁重力纯度比较为A>C>B>O，重力纯度均超过86%以上。 本试验每666.7m，含糖量最高是处理O，为1 392.75kg，最低是处理C，1 138.58kg，处理。与处理C达5%显著水平;且含糖量均超“吨糖”。更多还原

【Abstract】 T22 as the material, the four planting structures( treatment A: narrow row and wide individual ,row spacing ,1.0m ; treatment B: wide row and narrow individual ,row spacing,1.25m; treatment D: wide and narrow row-wide individual, row spacing ,1.5m; treatment C: wide and narrow row-narrow individual ,row spacing 2.0m .) and the four structure colonies’ growing trends, the physiological characters, the yield and quality were studied in the research ,the results were as follows:Colonies’ growing trends characters: the highest germinating rate was treatment C, 71.9%; the lowest was treatment D, 68.3%; the highest tiller rate was treatment A, 55.5%, the lowest was treatment C, 41.8%; the fastest gVowing rate in the whole bearing period wastreatment C, the next was in treatment B, the lowest was treatment A; The highest LAI was treatment A, the next was treatment B, the lowest was treatment D. The most of efficient stems were treatment A, 6155 stems, the fewest was treatment C, 5265 ones, the difference between treatment A and treatment C come up to the very obvious level of 1%, the difference between the others was not obvious.Physiological characters: chlorophyll content, net photosynthesis rate, transpiration rate, NRA activity and acid invertase activity ,etc, the results of all treatments had the same characters: high in the tiller period, the highest in elongating period, low in technical period, but the difference between them was not obvious. The content of solubility sugar in the leaves was gradually increasing from the elongating period to the technical period, reaching to the highest level in technical period; The changes of dry materials of daily accumulation from the tiller period to the technical period was the highest in the elongating period, the next was in the technical period.The yield and quality of sugarcane: the highest yield of stems per 666.7m2 was treatment D, 9169.87kg. The lowest was treatment C, 7427,12kg. The difference between treatment C and D was obviously different, reaching to 5%. The highest content of sugar was treatment B, 15.46%; the lowest was treatment D, 15.19%. Glucose of all thetreatments was low, less than 0.1%. The gravity purity of cane juice was A>C>B>D, over 86%.The highest sucrose per 666.7m2 was treatment D, 1392.75kg; the lowest was treatment C, 1138.58kg. The difference between treatment D and C was obvious, up to 5%. The content of sucrose was over 15.00t/ha.更多还原