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江苏沿海地区为我国冬大麦主产区 ,大麦产量常常因早春气候的剧烈变化而受到严重影响。 2 0 0 4年 4月初的大风降温过程 ,正值沿海地区大麦抽穗前后 ,降温幅度在 15℃以上 ,一些大麦品种发生大面积的低温冷害 ,造成空壳现象。本文对试验田间 14 2份材料在灌浆中期 ,进行了空壳率的调查 ,以此了解二棱大麦、多棱大麦不同抽穗期品种 (系 )空壳发生的情况 ,并根据当地气象资料 ,针对去年大麦抽穗期前后特殊的气候条件 ,参考国内学者们的研究报道 ,分析大麦空壳形成的主要原因。
The coastal areas of Jiangsu Province are the main winter barley producing areas in China. The output of barley is often severely affected by the drastic changes of the early spring climate. During the coldest wind cooling in early April 2004, just before the emergence of the barley in the coastal areas, the temperature drop rate was above 15 ℃. Some barley varieties suffered large-scale cold chilling injury, causing the phenomenon of empty shell. In this paper, the investigation of the shell percentage of 14 2 materials in the field during the filling stage was conducted to understand the occurrence of the shell of the varieties (lines) of two-rowed barley and polygamous barley at different heading stages. According to the local meteorological data, Last year’s barley heading stage before and after the special climatic conditions, with reference to domestic scholars reported that the main reason for the formation of barley shell.