播种行距和灌水量对春箭筈豌豆种子产量及其构成因素的影响

Influence of Row Spacing and Irrigation Rate on Seed Yield of Vicia sativa

在山西雁门关生态畜牧区,普遍应用春箭筈豌豆作为生产饲草和绿肥。为了研究播种行距和灌水量对春箭筈豌豆种子产量及其构成因素的影响,2013年在山西农科院高寒所试验基地试验田,采用裂区设计,研究4种行距和4种灌水量对春箭筈豌豆种子产量及其构成因素的影响。试验结果表明:(1)随着行距增大,春箭筈豌豆植株高度下降,株高和种子产量呈负相关,R=-0.8563。(2)行距和灌水量对种子产量及产量构成因素的影响程度各不相同。行距对种子产量、有效分枝数、花序数和籽粒数等4个因素的影响较大;灌水量对各因素的影响较小。(3)种子产量构成因素中,有效分枝数(x1)、花序数(x2)和籽粒数(x3)与种子产量呈显著正相关,相关系数分别为0.325、0.702和0.804,种子产量的回归方程为y=269.853+64.102x1+49.978x2+5.379x3。(4)当行距为60 cm,灌水量为900m3/hm2时,种子产量最高。

Avena sativa is a widely used forage and green manure in northwestern of Shanxi Province. This experiment was carried out with split-plotex periment design in Shanxi Province in 2013, to research the influence of row spacing and irrigation rate on seed yield components and seed yield of Vicia sativa. The results showed that：（1） As row spacing increased, plant height gradually decreased. At different row spacing,plant height was negatively correlated（R=-0.8563） with seed yield.（2） The influences of row spacing andirrigation rate on seed yield components and seed yield of Vicia sativa were different. Row spacing had greater effect on seed yield, repro-ductive shoots, florets, and seeds, but irrigation rate had less effect on the above factors.（3） Of the seed yield components, repro- ductive shoots（x1）, seeds（x2）, florets（x3） were positively correlated（P〈0.05） with seed yield, the correlation coefficients were 0.325, 0.702 and 0.804 respectively. The regression equation was y=269.853＋64.102x1＋49.978x2＋5.379x3.（4） The highest seed yield was obtained when row spacing was 60 cm and irrigation rate was 900 m3/hm2.