不同施氮水平线椒地上部分干物质积累及分配模拟  

Simulation Study on Dry Matter Accumulation and Distribution of Aboveground Part under Different Nitrogen Levels in Cayenne Pepper

作　　者：孙长青[1] 岳延滨[1] 赵泽英[1] 黎瑞君[1] 彭志良[1] 李莉婕[1] 

机构地区：[1]贵州省农业科技信息研究所,贵州贵阳550006

出　　处：《贵州农业科学》2015年第10期86-89,94,共5页Guizhou Agricultural Sciences

基　　金：国家自然科学基金项目"不同氮素条件下辣椒干物质生产;分配及产量形成模拟"(31360290);中央补助地方科技基础条件项目"贵州省数字农业技术创新平台建设"[黔科合条中补地(2013)4002];贵州省科学技术基金项目"辣椒生长的三维可视化模拟研究与实现"[黔科合J字(2013)2173];贵州省农科院自主创新项目"贵州辣椒;火龙果数字化管理技术研究"[黔农科院自主创新科研专项字(2014)011]

摘　　要：为给辣椒氮肥优化管理提供理论支撑,分析长辣7号在不同施氮水平地上部分的生长发育、干物质的变化,并利用225kg/km2尿素处理的观测数据,建立理想条件下线椒植株地上部分各器官干物质分配模型,对其干物质分配进行模拟。结果表明：氮肥对开花坐果期和盛果期线椒植株株高和茎粗的影响较小,对SPAD值的影响较大,开花坐果期干物质较多分配于叶片,为41.61%~43.76%,盛果期干物质较多分配于角果为49.40%~53.02%,合理增施氮肥有效促进线椒植株地上部分干物质积累,其中N3（225kg/km2尿素）处理干物质增加较多,开花坐果期和盛果期分别增加2.06g/株和8.86g/株。利用同期试验资料进行验证,叶片、果实和茎干物质模型的平均相对误差分别为15.20%、16.25%和11.01%。The effects of different nitrogen levels on growth development and dry matter quantity variation of aboveground part of Changla 7 were studied, then the dry matter allocation model of part organs of aboveground part of pepper plants under the ideal condition was established by using the observation data from the treatment with applying 225 kg/km2 nitrogen and finally the dry matter allocation was simulated by the established dry matter allocation model to provide the theoretical support for nitrogen optimization management of pepper. Results： Nitrogen has a little influence on height and stem diameter of pepper plants at blossom and fruit stage and full fruit-bearing stage and a larger influence on SPAD value. 41. 61%~43. 76% of dry matter at blossom and fruit stage is distributed in leaves of pepper plants and 49.40% ~53.02% of dry matter at full fruit-bearing stage is distributed in fruits of pepper plants. Rational extra nitrogen fertilizing can effectively improve dry accumulation of aboveground part of pepper plants and the dry matter increment of pepper plants at blossom and fruit stage and full fruit-bearing stage increases by 2. 06 g/plant and 8. 86 g/plant under applying 225 kg/km2 urea respectively. The average relative error in leaf, fruit and stem between the dry matter allocation model and the actual observation data is 15.20%, 16.25% and 11.01% separately.

关 键 词：线椒 全氮 干物质 积累分配 模拟 

分 类 号：S641.3[农业科学—蔬菜学]