摘要
对三个青稞品种(系)籽粒灌浆特性进行观察和分析,结果表明相同栽培条件下裸大麦籽粒干物质积累过程与品种有关,其中两个品系籽粒干物质积累过程符合“S”型曲线变化,而另一个品种籽粒干物质积累出现“双高峰”现象。裸大麦籽粒体积和水分含量变化呈抛物线。抽穗后20—30d是裸大麦产量形成关键时期,籽粒含水量相对平稳,籽粒干物质积累量约占粒重的75%。各个地区应因地制宜选用适宜品种及相应的栽培技术措施来获得青稞高产。
Characters of grain formation and filling of three varieties of bare barley were observed and analyzed The result showed that the different variety had the different dry matter under the same culture conditions. Accumulating process of grain“S” curve could be used to describe the dry matter accumulating process of grain of the two of three varieties, but the other one was described as a curve with two peak. The water content and grain volume changed as a curve with a single peak. The period key for yield formation was 20d - 36d after ear sprouting, The water content of grain is increased stably, and the amount of dry matter accumulation in grain was 75%. Suitable varieties and relevant cultivating method were used in the planting area in order to high yield.
出处
《青海农林科技》
2005年第3期25-27,共3页
Science and Technology of Qinghai Agriculture and Forestry
基金
青海省科技厅"九五"重大科技攻关项目
关键词
青稞
品种(系)
灌浆
特性
Bare barley
Varieties
Fill
Characters
