【摘要】 以超级稻品种华航31号为试材,研究不同栽插苗数(A)与种植密度(D)配置方式下的水稻群体分蘖动态及产量特征,寻求适合华航31号的最佳种植模式,实现水稻高产稳产。结果表明:在每穴插植苗数相同的条件下,分蘖增长和消减速度为D1>D2>D3,在种植密度相同的条件下,分蘖增长和消减速度为A6>A4>A2>A1;不同的插植苗数和种植密度配置处理对华航31号的产量均有显著或极显著的影响,影响效应为A>D>A×D,其中每穴栽插苗数为2苗、种植密度为24万穴/hm2的处理组合产量最高,折合产量为6584.0kg/hm2。因此,在实际生产中,适当减少栽插苗数,合理密植,更有利于协调群体和个体的关系,发挥华航31号高产的潜力。更多还原

【Abstract】 To obtain the best cultivation method and achieve high and stable yield of rice,super rice huahang No.31 was selected as the experimental material to study the tillering dynamics and yield characteristics under different seedlings per hill( A)and planting densities(D). The results showed that under the same conditions of seedlings per hill,the growth and cutting rate of tillers was D1>D2>D3. Under the same conditions of planting densities,the growth and cutting rate of tillers was A6>A4>A2>A1. The effects of seedlings per hill and planting densities on yield of huahang No.31 were significant or very significant. The order of influence effect was A > D >A×D. The treatment A2 D2 with 2 seedlings per hill and planting density 2.4×105 collections/hm2 had the highest yield of 6 584.0 kg/hm2. In the actual production,suitable decreasing seedlings per hill and suitable planting density will be helpful to coordinate the relation between groups and individuals,and exert the high yield potential of huahang No.31.更多还原