1987年我区大麦虽然取得了丰收,但各地普遍反映结实率比往年降低5—10％,不少田块出现了半穗以至整穗不实现象,我所品种比较试验区内,也同样出现了这种不实穗头。观察调查结果表明,大麦这种花而不实现象,是春季气候反常,出现冷害所致。现将观察到的大麦不实现象和不实原因分析于后,供参考。 一、大麦空壳不实现象 1.花期不孕小穗的表现 在同一耕作、栽培、管理条件下的省大麦良种区域试验、省大麦预备试验,共计19个品种、品系,3—4月份抽穗、开花、结实时,大部分品种都出现了花而不实现象。挂牌观察表明,这种花而不实小穗,一般在抽穗后3—5天即表现出来。小穗开花花药不裂,一是空瘪无粉,二是粉量极少,花 In 1987, barley in our region achieved a good harvest, but it generally reflected a drop of 5-10% in the rate of solidification in all parts of the country. Many fields showed half-spike and entire whole grain did not materialize. This is not real spike. Observations of the survey results show that the barley is an unrealistic phenomenon of flowers. It is caused by an abnormal spring weather and chilling injury. It is for reference after the analysis of barbaric phenomena and unrealistic reasons that we have observed. First, barley empty shell does not like 1 anthers spikelet performance in the same tillage, cultivation, management of provincial barley varieties regional trials, provincial barley preparation test, a total of 19 varieties, lines, 3-4 month heading , Flowering, strong, most of the species have appeared without realizing the phenomenon of flowers. Listed observations show that this flower spike, usually 3-5 days after heading showed that. Spikelets anther flowering is not split, one empty flat deflated powder, the second is very little powder, flowers