播量和行距对莜麦产量及其构成因素的影响

为了探讨青海省东部农区莜麦(Avena nuda)的适宜播量和行距, 本研究以青引3号莜麦(A.nuda cv.Qingyin No.3)为材料, 研究了播量和行距对种子产量、秸秆产量和种子产量构成因素的影响, 并进行了种子产量与构成因素相关性和经济效益分析。结果表明, 在播量120 kg·hm-2、行距20 cm处理下, 千粒重和种子产量较高;在播量150 kg·hm-2、行距15 cm时秸秆产量最高;其种子产量与其构成因素间具有显著(P0.05)或极显著(P0.01)正相关关系;经济效益分析表明, 播量120 kg·hm-2、行距20 cm处理下, 获得的纯收入最高, 为6 232元·hm-2。二元二次回归方程表明, 青引3号莜麦种子产量(kg·hm-2)与秸秆产量(kg·hm-2)可用其播量和行距估计。

Effects of seeding rate and row space on yield and components of naked oat

Field experiments with Qingyin No.3 cultivar were conducted to study the effects of seeding rate and row space on seed yield, stalk yield and seed yield components of naked oat (Avena nuda) in Minhe county, east part of Qinghai province. Correlation between seed yield and its components, production profit of naked oat were analyzed. Results showed that 1 000 kernel weight and seed yield were highest under the treatment of 120 kg·ha-1 seeding rate and 20 cm row space. Stalk yield was highest under the treatment of 150 kg·ha-1 seeding rate and 15 cm row space. There were significant correlations between seed yield and its components. Under the treatment of seeding rate 120 kg·ha-1 and row space 20 cm, the economic profit of naked oat production was highest which was 6 232 CNY·ha-1. Seed yield (Y1 kg·ha-1) and stalk yield (Y2 kg·ha-1) could be estimated by the binary quadratic equation between them and treatments with seeding rate (B, kg·ha-1) and row space (H, cm).