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花生矮化病(又称矮缩病和孤老病)是山东省花生(Arachis hypogaeaL.)上近几年发生的一种新的病毒病。据调查1976—1977年在山东的部分花生产区曾严重流行,一般病株率在20—30％,严重的高达60％以上,损失率达20—30％,重者为50％以上,个别地块单产只有20—30斤,几乎绝产。但1979年后病情明显下降,而且年度间发病程度差异很大。 感病花生的主要症状是花生主茎和分枝的节间显著缩短,植株特别矮小,株高只有健株的1/4至1/2(封3图1),整株叶形变小,叶片呈皱缩状,变厚、变硬、开花很少,甚至不开花。矮化严重的病株,大部分不结果或结几个小果,果仁大
Peanut dwarfism (also known as dwarf and psoriasis) is a new viral disease that has developed in recent years in the peanut (Arachis hypogaea L.) in Shandong Province. According to the survey, some peanut production areas in Shandong Province between 1976 and 1977 have been extremely prevalent. The average rate of diseased plants is 20-30%, the severity is as high as 60% or more, the loss rate is 20-30% and the weight is more than 50% Land yield of only 20-30 kg, almost absolutely. However, after 1979, the condition obviously decreased, and the incidence of the disease varied greatly in the year. The main symptom of peanut susceptible peanut stems and branches of the internode shortened significantly shorter plants, plant height of only 1/4 to 1/2 (Feng 3 Figure 1), the whole leaf becomes smaller leaves Shrinkage, thickening, hardening, flowering rarely, not even flowering. Dwarf serious disease strains, most of the results or knot a few small fruit, large nuts