论文部分内容阅读
采用地理纬度相似地区选育的、具有代表性的中、美大豆品种,在不同种植密度,施肥水平和种植地区条件下对大豆品种的适应性进行了比较研究。结果表明:在不同种植密度条件下美国俄亥俄州立大学选育的品种综合表现较好,都有较高的产量表现,对种植密度有较好的适应性;而辽宁省选育的品种大多产量较低,受种植密度影响较大,种植密度适应性较差。在磷酸二铵做种肥的条件下,美国俄亥俄州立大学选育的品种表现较好,对肥料的利用率较高;辽宁省选育的品种中,辽豆12号对施肥的反应较好,其它品种相对产量较低,肥力适应范围狭窄。美国俄亥俄州立大学选育的品种在不同地区种植平均产量均显著高于辽宁省选育的品种,两国品种对地区的适应性表现趋势一致,都是鞍山>沈阳>大连。
The adaptability of soybean cultivars with different planting densities, fertilization levels and planting areas were compared using representative Chinese and American soybean varieties bred in similar geographical latitudes. The results showed that under the conditions of different planting densities, the breeds grown at Ohio State University in the United States showed better overall performance, higher yield performance and better adaptability to planting density. However, most of the varieties bred in Liaoning Province Low, affected by the planting density, poor planting density adaptability. In the condition of DAP as seed fertilizer, the breed breeding by Ohio State University in the United States performed better and the utilization rate of fertilizer was higher. Among varieties cultivated in Liaoning Province, Liao Dou 12 responded better to fertilization, Relatively low yield of other varieties, narrow adaptation of fertility. The average yield of cultivars grown in Ohio State University in the United States was significantly higher than that of Liaoning Province. The adaptability of the two cultivars to the region showed the same trends, both of which were Anshan, Shenyang and Dalian.