【作者】 罗瑞林；

【导师】 刘克礼； 高聚林；

【作者基本信息】 内蒙古农业大学 ， 作物栽培学与耕作学， 2004， 硕士

【摘要】 本试验以吉育47、吉育56为材料，系统的研究了大豆在不同密度、施氮量处理下，光合性能、干物质积累、氮磷钾吸收积累和分配、子粒形成过程中脂肪和蛋白质的积累以及产量的形成规律。结果表明：大豆实现公顷产量3000㎏以上，光合性能的主要指标LAI、LAD均呈单峰曲线变化，峰值出现在结荚鼓粒期，最大LAI应在6左右，总光合势在30×105㎡·d/hm2以上；叶绿素含量最大值为55mg/L以上；其个体和群体干物质积累均呈“S”型曲线变化；大豆对氮、磷、钾三要素的吸收在结荚鼓粒期达高峰，分别占总吸收量的60.44%－66.67%、66.94%－76.22%、54.24%－65.25%。成熟期植株氮磷含量以子粒为最高，钾素以荚皮中含量最高，三要素在植株体内的积累量表现为：N>K2O>P2O5。生产百公斤子粒吸收N 9.19㎏、P2O52.83㎏、K2O 3.66㎏，N：P2O5：K2O=3.25：1：1.29；大豆子粒形成过程中，干物质和脂肪积累均呈“S”型曲线变化，蛋白质积累呈近似“W” 型的不规则曲线变化。本试验研究表明，吉育47品种实现公顷产量3000㎏以上的优化农艺栽培措施是：株数28.5万株/hm2；施磷量（P2O5）60kg/hm2；施钾量（K2O）30 kg/hm2；种肥氮46.8 kg/hm2；追肥氮52.5 kg/hm2。更多还原

【Abstract】 Dry matter accumulation, uptake and accumulation of N, P, K, accumulation of oil and protein in two soybean Cv (JiYu 47, JiYu 56) under different densities and fertilization during seed-filling stage, as well as yield formation, were systematically studied. As a result, key physiological indices and cultivation techniques for yield above 3000㎏ per hm2 were as follow leaf area index (LAI),which had a maximum of 5. Leaf area duration (LAD) accumulated to more than30×105㎡·d/hm2. N, P concentration in kernel was the highest in maturity, while Kconcentration in shell was the highest. Nitrogen accumulation in individual plant is the highest, then P2O5 and K2O. Production per 100㎏ kernel assimilates separately 9.19㎏N, 2.83㎏P2O5 and 3.66㎏K2O, the proportions of absorption content on N, P2O5 and K2O were 3.25：1：1.29. During seed-filling period, dry matter and oil accumulation in soybean seeds showed typical “S” curve. Protein accumulation was a “W” curve, increasing slowly in seed-filling stage. Agronomical measures for soybean yield over 3000㎏/hm2 were suggested as follows: density, 285000 plants/hm2; P2O5, K2O and N at planting, 60kg/hm2, 30 kg/hm2, 46.8 kg/hm2 respectively; top-dressing N, 52.5 kg/hm2。更多还原