【摘要】 用江苏淮阴地区60年代中期以来推广的11小麦品种,1987～1989年两个小麦生长季进行裂区试验,研究其产量能力及产量因素表现。徐州14号的产量能力230kg/亩,而泰山1号则达320kg/亩,主要是由于亩穗数和千粒重有了显著提高。博爱74-22和陕农7859等品种的产量能力在360kg/亩左右,产量的提高主要是保持了一定的粒重并着重增加了穗粒数.该地区以亩产小麦450～550kg 为产量育种目标,协调的产量因素结构以亩穗数40万～45万,穗粒数32～35粒、千粒重40～42g 为宜,并需兼抗南北麦区的多种病害。更多还原

【Abstract】 Eleven wheat cultivars grown in Huaiyin region,Jiangsu Province were planted in a3-replicated split plot design layout at Huaiyin in 1987-1989 for two crop seasons.Grain yield and yieldcomponents were evaluated.The yield of Xuzhou 14 was only 230 kg/mu but that of Taishan 1 was 320kg/mu largely owing to the increasing of ears per unit area and 1000 grain weight.The yield of Boai74-22and Shannong 7859 was 360 kg/mu,and the increasing of yield was due to maintaining the grain weightand increasing the grains per spike.Results from this study suggested that further yield advances could be at-rained by increasing ears per unit area,1000 grain weight and or grains per spike coordinately.更多还原