【摘要】 为探究疏花针茅种子适宜的播种行距和播种量,在青藏高原极度退化的典型黑土滩退化草地上,研究了行距和播量对牧草产量和种子产量的影响。结果表明:行距和播量均对疏花针茅牧草产量和种子产量有显著的影响（P<0.05）,当以行距30cm（A1）和播量30kg·h^-2（B3）组合下牧草产量较高,而种子产量以行距30cm（A1）和播量22.5kg·h^-2（B2）配置下较好。因此,在生产实践中,若生产饲草,疏花针茅适宜的播种行距为30cm,播量为30kg·h^-2;若收获种子,则适宜的行距和播量分别为30cm和22.5kg·h^-2。更多还原

【Abstract】 In order to explore the suitable sowing row spacing and sowing amount of Stipa penicillate seeds, four sowing amounts(15,22.5,30,37.5 kg·hm^-2) and two row spacing（15,30 cm） were designed in a two factor randomized block experiment in a typical degraded black soil grassland on the Qinghai Tibet Plateau for two consecutive years, the effects of row spacing and sowing amount on forage yield and seed yield were studied, which provided a theoretical basis for the high-yield cultivation technology of Stipa penicillate in alpine region. The results showed that row spacing and seeding rate had significant effect on herbage yield and seed yield（P < 0.05）. When row spacing was 30 cm（A1） and seeding rate was 30 kg·hm^-2（B3）, herbage yield was higher, while seed yield was better when row spacing was 30 cm（A1） and seeding rate was 22.5 kg·hm^-2（B2）. Therefore, in the production practice, if the forage grass is used, the suitable row spacing and sowing amount of Stipa penicillate are 30 cm and 30 kg·hm^-2; if the seeds are harvested, the suitable row spacing and sowing amount are 30 cm and 22.5 kg·hm^-2, respectively.更多还原