移栽密度组合对机插水稻淮稻5号生长发育及产量形成的影响  

Effects of Different Transplanting Density Combinations on Growth and Yield of Machine-transplanted Rice Huaidao 5

作　　者：钱银飞[1] 张洪程[1] 吴文革[1,2] 张强[1] 李杰[1] 陈烨[1] 郭振华[1] 戴其根[1] 霍中洋[1] 许轲[1] 李德剑 周有炎 

机构地区：[1]扬州大学江苏省作物遗传生理重点实验室,江苏扬州225009 [2]安徽省农科院水稻研究所,安徽合肥230031 [3]江苏省兴化市农业局,江苏兴化225700

出　　处：《江西农业大学学报》2009年第1期41-48,共8页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家粮食丰产科技工程(2006BAD02A03)

摘　　要：以迟熟中粳淮稻5号为材料进行机插试验,研究不同移栽密度组合对机插水稻淮稻5号生长发育及产量形成的影响。结果表明:降低密度能使单株生产力增强,提高单株成穗数和单株经济产量,穗型增大,穗长增加,穗粒数增多,粒重和结实率也增加,茎秆矮壮,抗倒伏能力增强,群体茎蘖消长较为缓和,成穗率升高。但也存在着茎蘖数量不足,群体LAI和生物产量积累较少,最后成穗数不足等特征。综合来看,机插水稻淮稻5号以移栽密度组合A3B3群个体矛盾协调最好,产量最高。Abstract：With mid - season japonica rice cuhivar huaidao5 as material, the effects of different transplanting density combinations on the characteristics of growth and yield formation of the Machine - transplanted rice were studied. The result showed as follows： Reduction of the density can strengthen the single productive forces, enhance the number of the ears and economical output of the single plant, enlarge the ear panicle, increase the length of the ear,increase the number of seeds of the ear,increase the grain weight and the grain - filling rate,shortens and strengthens the stem, strengthen the lodging resistance ability, alleviate the increase and decrease of the stems and tillers,raise the rate of ear - bearing. Reduced density,however, has some short comings, for instance, the number of stems and tillers is insufficient, the LAI and the biomass accumulation are reduced, the rate of the finally ear - bearing is insufficiency and so on. Generally speaking, the A3B3 combination is the best transplanting density combination for the mechanical transplanting rice Huaidao 5.

关 键 词：:机插水稻 穴数 本数 生长发育特点 产量形成 

分 类 号：S511.01[农业科学—作物学]