内优航148不同种植密度对再生稻产量的影响

Effects of different planting densities on yield of ratoon rice cv. “Neiyouhang 148”

进行再生稻内优航148不同种植密度试验,结果表明:内优航148作中稻—再生稻栽培,种植密度以每667 m21.4万~1.6万丛最佳,头季稻以1.4万丛的产量最高,再生季以1.6万丛的产量最高,两季总产量以1.6万丛的最高。

In this paper,different planting densities of ratoon rice cv. ＂Neiyouhang 148＂were tested. The results showed that the planting density of（ 1. 4- 1. 6） × 10~4 clusters per 667 m^2 was optimum when ＂Neiyouhang 148＂was cultivated as semilate and ratoon rice. The highest yield in the first season was obtained with the density of 1. 4 × 10~4 clusters per 667 m^2 while the highest yield in the ratoon season was obtained with the density of 1. 6 × 104 clusters per 667 m^2. The highest yield in these two seasons was obtained with the density of 1. 6 × 10~4 clusters per 667 m^2.