太和县夏玉米新品种的产量性状和适应性分析

在大田条件下，研究了5个夏玉米新品种在太和县的产量性状和生态适应性。结果表明：安隆4号和鲁单981较对照郑单958植株高大，各生育时期叶面积指数较高，叶片的功能期较长，籽粒灌浆期较对照延长5～7d，单穗重增加56.0～76.8g，籽粒产量增加13.11～20.58%。安隆4号对玉米大、小叶斑病、锈病和螟虫等抗性优势明显；蠡玉16号和鲁单981适应性和抗病性较强，对玉米锈病具有显著抗性；中科11号轻感锈病，滑单986严重感染锈病，影响籽粒产量。因此，在太和县生态环境条件下，安隆4号和鲁单981的综合抗性较好，增产潜力较大，应大面积推广种植。

Analysis on Yield Characters and Adaptability of New Summer Maize Variety in Taihe County

Under field condition, yield characters and adaptability of 5 new summer maize variety in Taihe county were studied. The results showed that compared with Zhengdan 958, Anlong 4 and Ludan 981 had bigger plants, higer leaf area index at every stage and longer functional period of leaf while the grain filling stage of that were prolonged 5-7 days. Meanwhile, single panicle weight of Anlong 4 and Ludan 981 were increased about 56.0-76.8g, and the grian weight of that were increased by 13.11～20.58%. Anlong 4 had obvious superiority of resistance to maize leaf spot, rust, and borer. Liyu 16 and Ludan 981 had better adaptability and disease resistance, and had signifitant resistance to maize borer. At the same time, Zhongke 11 had light sensitive to maize borer while Huadan 986 had high sensitive to that thus affect yields. So, under the ecoliogical environment condition of Taihe county, Anlong 4 and Ludan 981 had better comprihensive resistance and bigger yield potential, thus they coule be planted in large scale.