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本试验选取黑龙江省春小麦育种史上有典型代表性的“克字号”春小麦系列品种作为研究对象,在多年小麦育种及栽培研究的过程中发现各品种无效小码数在年际间存在差异,因此选取14个春小麦品种进行调查并分析,结果表明:无效小码数与年际间的气候变化有一定的关系,从整体上气候正常年份较不正常年份无效小码数明显减少,其中孕穗期的降水量与温度至关重要。
In this study, we selected the spring wheat cultivars in Heilongjiang Province as the representative representative varieties of spring wheat cultivars in the history of wheat breeding and cultivation for many years found that there is a difference in the number of small yards of different varieties in the years, Therefore, 14 spring wheat cultivars were selected for investigation and analysis. The results showed that the number of invalid small yards and the inter-annual climatic change had a certain relationship, and the number of invalid small yards significantly decreased in the normal years with less normal climate, The precipitation and temperature are crucial.