移栽密度与施肥方法对优质早稻成穗率的影响

Effects of Transplanting Density and Fertilization on Earbearing Tiller Percentage in High-quality Early Rice

通过不同移栽密度与不同施肥方法对优质早稻———金优F6进行成穗率的研究 ,结果表明 :移栽密度( 2 3 .1cm× 13 .2cm)与施氮比例 (基肥∶促蘖肥∶促花肥∶保花肥 =4∶2 .4∶1.2∶2 .4)的组合T8(A3 B2 ) ,群体分蘖增长速率快而分蘖消亡速率慢 ,能够早生快发 ,个体健壮 ,有效分蘖数多 ,成穗率高 ,产量最高。比相同移栽密度T7(A3 B1 )、T9(A3 B3 )分别增产 6.73 %和 7.42 % ,比相同施肥方法T2 (A1 B2 )、T5(A2 B2 )增产 12 .2 2 %和 13 .90 %。

Experiments on the effect of different fertilization and planting density on earbearing tiller percentage and population quality in high-quality early rice -Jingyou F 6 were carried out. The results show: under the combination --T 8(A 3B 2) of planting density (23.1 cm×13.2 cm) and nitrogen ratio (base fertilizer∶accelerating tiller fertilizer∶ accelerating flower fertilizer∶ preserving flower fertilizer=10∶6∶3∶6), the population, whose tiller increase rapidly and diminish slowly, grows quickly and healthily at the early stage, the number of effective tillers is appropriate and the earbearing tiller percentage improves, the yields under this combination are the highest, 6.73% and 7.42% higher than those of T 7(A 3B 1) and T 9(A 3B 3) with the same density, and 12.22% and 13.90% higher than those of T 2(A 1B 2) and T 5(A 2B 2) with the same fertilization.