“和燕1号”在二阴地区最佳播种期试验研究

Experimental Study on the Optimum Sowing Time of “Heyan No.1” in the Hogh-humid Mountain Area

为确定"和燕1号"燕麦新品种在二阴地区的适宜播种时间,在甘肃省二阴地区和政县进行"和燕1号"最佳播种期试验,测定不同播期"和燕1号"的物候期、株高、生长速率、草产量及种子产量。结果显示:随着播种期的推后,生育时期逐渐推后,株高呈降低—升高—降低的变化趋势,5月15日播种株高最高,4月24日和6月15日播种株高最低;生长速率变化与株高变化趋势趋于一致,4月份播种"和燕1号"生长速率普遍较低,6月29日播种植株生长速率最快,5月15日次之。生产中若用作饲草,可推后播种时间,5月15日左右为最佳播期;收籽实,则在4月14日左右播种可获得高产。

In order to determine the best sowing time of"Heyan No.1"in the high-humid mountain area,the selection experiment of the optimum sowing time of"Heyan No.1"was conducted in Hezheng county of Gansu province.Phenological period,plant height,growth rate,grass yield and seed yield of"Heyan No.1"were measured in different sowing time.The results showed,with the sowing time delaying,the growth stage was gradually delayed,the plant height showed the trend of"decrease-rise-decrease".The plant height was the highest at May 15,the lowest on April 24 and June 15.The variation trend of growth rate was consistent with plant height.The growth rate of"heyan No.1"sowed in April was generally lower,but the growth rate was the fastest in June 29,followed by May 15,and there was no significant difference between them(P > 0.05).Therefore,as for forage production,the sowing time can be delayed,the best sowing date is May 15.The seed yield is more by sowing seed on April 14.