摘要
本文对浙江省30多年来（60年代以来）不同时期生产上种植的有代表性的二棱大麦品种的主要农艺性状进行了研究．结果表明，籽粒产量平均每10年提高8．11％，经济系数从早期品种的0．461提高到近期品种的0．564，生物产量近期品种低，分蘖成穗率和有效穗数近期品种高，每穗粒数、千粒重、单穗粒重近期品种低，株高趋向矮化、抗倒性增加，最后三叶面积变小，生育期缩短、熟期趋早。
Main agronomic characters were studied with ten representing two-rowed barley cultivars(Hordeum distichum L) in Zhejiang at different stages during thirty years. It showed that modern cultivarsyielded more than old ones and the average increase of grain yield was of 8.11% each ten years; Harvestindex increased from 0.461 of old cultivars to 0.564 of modern ones; Modern cultivars had higher percentageof earbearing tillers and number of productive ears, but they had lower biological yield, kernel numberand kernel weight per ear and 1000 kernel weight. With the replacement of cultivars, the plant becameshorter and more resistant to lodging, the area of uppermost three leaves became smaller, and the growthperiod was shortened and maturing date became carlier.
出处
《浙江农业学报》
CSCD
1995年第3期173-177,共5页
Acta Agriculturae Zhejiangensis
