一年生黑麦草A2003种子丰产栽培技术

The Cultivation Technique for Seed Yield of A2003,a New Lolium multiflorum Line

采用二次回归旋转组合设计方法，研究了氮、磷、钾和有机肥4因子对一年生黑麦草A2003种子产量的影响，建立了相应的数学模型，结果表明：氮肥用量在15．98～19．02kg／667m^2、磷肥用量在22．83～27．17kg／667m^2、钾肥用量在9．23～10．69kg／667m^2、有机肥用量在2350．77～2497．04kg／667m^2时，一年生黑麦草A2003种子产量大于42．73kg／667m^2，为较适宜组合。

The quadratic regression rotational combination design was used to study effects of N, P, K and organic manure on seed yield of A2003 and the mathematical model for its high seed yield was established. The results showed that more than 42.73 kg/667m^2 of seed yield could be obtained under the application condition of 15.98 kg/667m^2 to 19.02 kg/667m^2 of N, 22.83 kg/667m^2 to 27.17kg/667m^2 of P, 9.23kg/667m^2 to 10.69kg/667m^2 of K and 2350.77kg/667m^2 to 2497.04kg/ 667m^2 of organic manure.