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为了明确黑龙江省不同年代育成大豆品种对施肥水平响应的变化趋势,以黑龙江省不同年代育成的合丰25、合丰35、绥农14、合丰39、垦丰16等5个主栽大豆品种为材料,研究不同年代育成大豆品种在不同施肥水平条件下农艺性状及产量因子的变化规律。结果表明,黑龙江省不同年代育成大豆品种在不同施肥水平条件下,单株产量、主茎节数、单株荚数、光合速率等性状改良效果明显,株高、主茎节数、单株粒数、单株叶面积也得到了不同程度的改良,单株叶面积向着更适于密植栽培的清秀型发展;农艺性状和产量因子对低施肥水平适应能力的改良主要是由于单株荚数显著提高的结果;对中等施肥水平适应能力改良主要是由于光合速率显著提高的结果;对高施肥水平适应能力增强主要是由于光合速率和主茎节数极显著提高的结果。
In order to clarify the response trend of fertilized soybean varieties bred in different years in Heilongjiang Province, five main cultivated soybean varieties Hefeng 25, Hefeng 35, Suinong 14, Hefeng 39, Kenfeng 16 were cultivated in different ages in Heilongjiang Province. As materials to study the variation of agronomic traits and yield factors under different fertilization levels in different age bred soybean cultivars. The results showed that under different fertilization levels, the yield of soybean, the number of main stems, pods per plant and photosynthetic rate of Heilongjiang Province were significantly improved under different fertilization levels. The plant height, the number of main stems, The number of leaf area per plant has also been improved to varying degrees, the leaf area per plant toward more suitable for the close-planting cultivation Qingxiu type development; agronomic traits and yield factors to adapt to low levels of fertility improvement mainly due to a significant pod number per plant The results showed that the improvement of adaptability to medium fertilization level was mainly attributed to the significant increase of photosynthetic rate. The increased adaptability at high fertilization level was mainly attributed to the extremely significant increase of photosynthetic rate and main stem number.