盆栽条件下大豆品种对肥力的反应

在盆栽条件下对50个大豆品种在不同肥力下的表现进行了观察研究,旨在筛选对肥力不敏感的基因型.结果表明:高肥处理的品种成熟期提前,平均2.68天.3个品种的结荚习性有明显变化.高肥下分枝数增加明显,对肥力反应敏感的品种占15%,70%的品种反应不敏感,仅有少数品种在高肥下株高增加明显.在高肥条件下,单株籽粒产量普遍提高,平均为27.8%;但反应不敏感和较不敏感的品种占52%,其中一半又是在生产中推广面积较大的品种.凡是推广面积较大的品种都是在不同肥力条件下产量稳定性较好的品种.

RECTIONS OF SOYBEAN VARIETIES TO SOIL FERTILITIES UNDER TUB PLANTING CONDITION

Rections of 50 soybean varieties to soil fertility under tub planting condition were sduded to screan the genotype that were insusceptible to soil fetility. The experement results indicated that soybean plant of high fertility treatment mutared early by an average of 2.68d, 42% of varieties were insusceptible or more insusceptible type. Bod bearing habit of 3 varieties had obvious difference between high and low fertility. Branches of 33 varieties had not obviously increacing under high fertility condition. Seed yield per plant of high fertility treatment increased universally by an average of 27.8%. The rections of seed yield of 26 varieties to fertilities were insusceptible or mere insusceptible. The varieties that had large planting area had generally high yield stability under different fertility conditions.