热研4号王草选育

The Selection and Utilization of Reyan No.4 King Grass

热研 4号王草是象草和美洲狼尾草的杂交种。品比试验结果表明 ,干物质产量为 5 96 70 kg/hm2 ,比对照 (象草 )增产 2 1.9%。区域试验结果比对照增产 11.3%～ 2 7.3%。生产试验结果比对照增产 13.3%～ 2 5 .0 %。在刈割条件下 ,热研 4号王草不能抽穗开花 ,利用期比象草延长

Reyan No.4 King grass is a hybrid of Pennisetum purpureum and P.americana and was introduced from CIAT in 1984. The results from the variety testing show that the annual dry material production is 59670 kg/hm 2, 21.9% more than that of P.purpureum ; The results from reginal trial show that the forage yield improved 11.3%～27.3% than that of P.Purpureum, and improved 13.3%～25.0% in production testing. The King grass has no head sprouting when cutting in the winter, and the time for utilization expended 5 months more than that of P.Purpureum.