不同茎蘖苗和栽插密度对协优57产量及其主要经济性状的影响

The Influence of the Different Tillers and Planting Densities on the Yield and the Main Economic Characteristics of Xieyou 57

通过三因素的随机区组分析 ,得出组合、密度、不同茎蘖苗、组合×不同茎蘖苗、密度×不同茎蘖苗、组合×密度×不同茎蘖苗之间差异均达极显著水平。且不同茎蘖苗对产量的影响最大。组合以协优 5 7的产量较高 ,密度和秧苗素质以 2 2 .5万穴 /hm2 和 3个茎蘖苗的产量较高 ;组合×不同茎蘖苗以汕优 6 3在茎蘖苗为 3个时产量较高 ,而协优 5 7因其成穗率高 ,穗子大 ,在不同的茎蘖苗下均能获得较高产量 。

The experimental results of the random-plots of three factors: rice combination, planting density and different number of tillers showed that there were significant differences among combination, density and different number of tiller, and interaction of combination x different number of tiller, density x different number of tiller, and combination x density x different number of tiller. And the different number of tillers had the most effect on rice yield. Among all rice combinations, the yield of Xieyou 57 was highest when its planting density was 22500 dens/hm 2 and the number of tiller was three tillers. Among the interaction of combination x number of tiller, yield of Shanyou 63 with three tillers were highest and Xieyou 57 has higher yield because of its higher rate of making-panicle and larger panicle.It also showed that Xieyou 57 has a higher capacity of adaptability.