早稻新品种鄂早19密肥试验初报

Study on the Effect of Planting Density and Soil Fertility on New Early Season Rice Variety E-zao 19

早稻新品种鄂早19密度肥料两因素试验表明,密度、肥料是影响水稻产量的主要因素,密肥互作对产量具有显著影响。鄂早19在高密度和高肥力条件下产量最高。经济性状调查表明,鄂早19在中密度和高肥力条件下,有效穗数最高,但成穗率较低。在低密度和高肥力条件时,每穗总粒数和每穗实粒数最高,而在高密度和高肥力条件下千粒重最高。

The study on the effects of planting density and soil fertility on the new variety E-zao 19 showed that planting density and soil fertility were the main factors affecting yield. The interaction between density and fertility had very significant effect on yield. The yield of E-zao 19 was the highest under higher density and higher fertility conditions. Investigation on e- conomic characters showed that the effective panicles were the highest but the panicle forming rates were low under the medium density and higher fertility conditions. In lower density and higher fertility conditions, the total grain number per panicle and seed number per panicle were the highest. Under the conditions of higher density and higher fertility, one thou- sand seed weight was the highest.