探究不同播种密度对饲用燕麦——“太阳神”生产性状的影响

Exploring the Effects of Different Sowing Density on the Production Characters of Forage Oat“Tai Yang Shen”

为研究燕麦——“太阳神”在黄土高原高寒二阴区的丰产栽培技术,笔者在甘肃省兰州市永登县坪城乡歇地沟村开展了不同播量对燕麦生产性状的影响试验,探讨了不同播量下单株分蘖数、穗粒重、穗粒数、千粒重和株高的变化。结果表明随播量的增加,单株分孽数逐渐减少,不同播量下燕麦单株分孽数存在极显著的差异(P<0.01)。Dl处理(播量150 kg/hm2)的单株分孽平均达11个以上,显著高于D2处理(播量165 kg/hm2),极显著高于其它处理;穗粒重和穗粒数亦随播量的增加而逐渐减少,以为150 kg/hm2、165 kg/hm2时表现最好,D1处理和D2处理的差异不显著(P>0.05);燕麦千粒重变化不大,没有随不同播量处理而发生显著变化。建议在当地“太阳神”播种量以150 kg/hm2为宜。

In order to study the high-yield cultivation techniques of oats"Tai Yang Shen"in the high cold and two shade areas of the Loess plateau,the effects of different sowing rates on the production characters of oats were studied in Xiedigou village,Pingcheng town,Yongdeng county,Lanzhou city,Gansu province.The results showed that the number of grains per plant decreased with the increase of sowing rate,and there was a significant difference in the number of grains per plant under different sowing rates(P<0.01).The average number of individual plants in D1 treatment(150 kg/hm2)was more than 11,which was significantly higher than that in D2 treatment(165 kg/hm2),and extremely significantly higher than other treatments.Grain weight per spike and grain number per spike also decreased with the increase of sowing rate,which was considered to be the best at 150 kg/hm2 and 165 kg/hm2,and there was no significant difference between D1 and D2(P>0.05);the 1000 grain weight of oats did not change significantly with different sowing rates.It is suggested that 150kg/hm2 is the best sowing rate for"Tai Yang Shen".