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中文摘要: 根据对不同播种期鸡毛菜的抽样测定资料，采用植物生长模型结合鸡毛菜生产期间9～25℃的有效积温对叶龄进行估算，叶龄估算的绝对误差在0.5叶之内。
中文关键词: 鸡毛菜，叶龄，植物生长模型，有效积温
Abstract:According to random sampling data of small Chinese cabbage for different sowing date in Shanghai,leaf ages are estimated by growing model of plant and effective acumulated temperature from 9℃ to 25℃ in the growing period of small Chinese cabbage. Mean absolute error for estimated leaf ages is within half leaf.
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引用文本：
李军,杨秋珍,汪治澜,1998.鸡毛菜叶龄估算模式及其应用[J].气象,24(4):50-53.
,1998.A Estimated Model of Leaf ages for Small Chinese Cabbrage and Its Application in Shanghai Vegetable Growing Area[J].Meteor Mon,24(4):50-53.
李军,杨秋珍,汪治澜,1998.鸡毛菜叶龄估算模式及其应用[J].气象,24(4):50-53.
,1998.A Estimated Model of Leaf ages for Small Chinese Cabbrage and Its Application in Shanghai Vegetable Growing Area[J].Meteor Mon,24(4):50-53.