八倍体小黑麦新品种不同追氮量试验

NITROGEN REQUIREMENT OF TWO NEW OCTOPLOID TRITICALE CULTIVARS

在施等量基肥条件下,于1987～1989年对黔中一号、劲松5号两个小黑麦新品种和阿波小麦品种分蘖期进行了不同追氮量试验。两年结果表明:黔中一号、劲松5号比阿波需肥较少,而产量较高。均以每亩追施纯氮2公斤(尿素4.35公斤)为最佳,平均亩产分别比CK增产7.9%和3％,追施纯氮5公斤以上亩产量则递减;阿波小麦则以追施纯氮4公斤(尿素8.7公斤)亩产量最高,比CK增产20.8％,追施纯氮增至6公斤略有减产。

Under equal fertilizers applied at planting, in tillering, Qianzhong No. 1 and Jinsong No. 5 , the two new octoploid triticale cultivars, and the wheat variety Abbondanza were conducted treatment of varied amount of nitrogen from 1987 to 1989. The results of the two years experiment were as follows: Qianzhong No. 1 arid Jinsong No. 5 needed less amount of nitrogen than Abbondanza whereas possessed higher yield. The yield of both octoploid triticale cultivars was the highest at the treatment of 2 Kg N per mu, and increased by 7.9%, 3% than that of check respectively. The two octoploid triticale cultivars yield reduced in being applied above 4 Kg N per mu. In contrast, Abbondanza possessed the highest yield in being applied 4 Kg N per mu, and its yield increased by 20.8% than that of check, Its yield slightly reduced in being applied 6 Kg N per mu.