‘和燕1号’农艺性状和产量对不同播量和行距的响应

Sowing rates and row spacing of Avena sativa ‘Heyan No.1’ influence agronomic characters and yield

为研究‘和燕1号’燕麦(Avena sativa)的栽培措施,挖掘其高产潜力,本研究在甘肃省和政县进行了不同播量和不同行距的试验,探讨了播量和行距对‘和燕1号’农艺性状、干草产量和种子产量的影响。结果表明,播量和行距对‘和燕1号’的农艺性状、干草产量及种子产量均有显著影响;干草产量在行距30 cm+播量300 kg·hm^–2时最高,达9059.73 kg·hm^–2;种子产量则在行距20 cm+播量300 kg·hm^–2时最高,达2728.40 kg·hm^–2。通过相关分析和通径分析,株高、分蘖数、干草产量、种子产量与行距极显著正相关(P<0.01),茎粗、叶长、有效分蘖数与行距显著正相关(P<0.05);种子产量与播量显著正相关(P<0.05),分蘖数、茎粗、叶宽与播量显著负相关(P<0.05),其中穗长与播量极显著负相关(P<0.01);种子产量与株高、干草产量极显著正相关(P<0.01);株高对干草产量的直接作用最大。实际生产中可以通过影响‘和燕1号’株高、有效分蘖数、叶长、茎粗等指标来挖掘该品种产量潜力,做到经济效益的最大化。

An experiment was conducted in Hezheng County of Gansu Province to study the effects of different sowing rates and row spacing of Avena sativa‘Heyan No.1’on agronomic characters,hay yield,and seed yield.Results show that sowing rate and row spacing significantly affected A.sativa‘Heyan No.1’agronomic characters,hay yield,and seed yield.Hay yield was highest(9059.73 kg·ha^–1)with a row spacing of 30 cm and seeding rate of 300 kg·ha^–1,while seed yield was highest(2728.40 kg·ha^–1)with a row spacing of 20 cm and sowing rate of 300 kg·ha^–1.Correlation and path analyses showed that plant height,tiller number,hay yield,and seed yield were positively correlated with row spacing(P<0.01),while stem diameter,leaf length,and effective tiller number were positively correlated with row spacing(P<0.05).Seed yield was positively correlated with sowing rate(P<0.05),while tiller number,stem diameter,and leaf width were negatively correlated with sowing rate(P<0.05)and seed yield was negatively correlated withspike length(P<0.01).Seed yield was significant positively correlated with plant height and hay yield(P<0.01).The direct effect of plant height on hay yield was the greatest.In production,yield potential of A.sativa‘Heyan No.1’could be excavated by altering plant height,effective tiller number,leaf length,stem diameter,and so on,to maximize economic benefits.