品种及施肥对草地早熟禾种子产量要素和产量的影响

Effects of species and applied fertilizer on Kentucky bluegrass (Poa pratensis) seed yield and yield components

采用5因素混合正交组合设计方案,连续2年对6品种草地早熟禾Poa pratensis种子生产进行研究,结果表明:品种男爵(Baronie)和公园(Park)在酒泉进行种子生产具有一定的优势;种子最高产量分别是584和537 kg/hm2;两品种施肥管理是施肥时期均为春季施1/2+上年秋季施1/2,施氮量均为90 kg/hm2,品种Baronie施P2O5量为120 kg/hm2,Park施P2O5量为90 kg/hm2。

Based on quintic-factor orthogonal designed field experiment, the study on seed production of 6 Kentucky bluegrass （Poa pratensis） varieties, was conducted in two consecutive years （2003-2004）. The results showed, ＂Baronie＂ and ＂Park＂ can be planted for seed production in Jiuquan, the seed yield is 584 kg/hm^2 , 537 kg/hm^2 , respectively. The optimal time for appling fertilizer is half in spring and the other half applied in the last autumn; Apply N 90 kg/hm^2 for the two species, apply P2O5 120 kg/hm^2 for ＂Baronie＂ and 90 kg/hm^2 for ＂Park＂, respectively.