长春晚播冬小麦越冬性和产量的初步研究

摘要

Winter wheat (Jia 690) was planted at densities of 675, 525,375 plants/m2 in Changchun on September 29, 1997. The results showed that when sown at the end of September, the phenology and winter-passing rate of winter wheat at different densities were similar. The yield of winter wheat at densities of 675 and 525 plants/m2 were higher than that at the density of 375 plants/m2.%将冬小麦品种加690以4种密度处理(675万株／hm2、525万株／hm2、375万株／hm2、375万株／hm2+抗寒剂)于I997年9月29日种植在长春。结果表明：在长春晚播冬小麦时，不同密度间的生育期和越冬率相似；密度增加到675万株／hm2和525万株／hm2可显著提高冬小麦产量。