早熟青贮玉米新品种中夏玉4号选育及复种栽培技术  

Breeding and Multiple Cropping Technology of Early-maturing Silage Maize Zhongxiayu No.4

作　　者：闫丽华 王永宏[2] 赵健[2] 陈绍江[3] 赵如浪[2] 张文杰[2] 

机构地区：[1]宁夏灵武市农业综合开发办公室,宁夏灵武7514001 [2]宁夏农林科学院农作物研究所,宁夏永宁750105 [3]中国农业大学国家玉米改良中心,北京100094

出　　处：《宁夏农林科技》2015年第12期5-6,共2页Journal of Ningxia Agriculture and Forestry Science and Technology

基　　金：国家玉米产业技术体系银川综合试验站项目(CARS-02-67);宁夏农林科学院科技创新先导资金项目"宁夏中早熟耐旱优质高产全株青贮玉米品质评价指标研究"(NKYJ-14-28);农发项目"鲜食玉米新品种中夏糯68示范推广课题"(NTKJ2014-2-09)

摘　　要：中夏玉4号是宁夏农林科学院农作物研究所与中国农业大学国家玉米改良中心合作选育的早熟青贮玉米品种。其植株高大,叶片宽大,持绿性好,生物产量高,一般生物产量在69 000～76 000 kg/hm2。在宁夏冬小麦后复种全生育期90 d,宁南山区春播全生育期122 d,与中原单32的种植区域一致。通过适时播种,合理密植,加强田间管理和适时收获可取得最佳产量与营养成分。The Zhongxiayu No.4 is a new early-maturing silage maize variety developed by Crops Institute of Ningxia Academy of Agriculture and Forestry Sciences in collaboration with State Maize Improvement Center of China Agricultural University. It features tall figure, broad leaf, well stay-green trait, and high yield with average yield of 69 000~76 000 kg/hm2.The whole growing period was 90-day with multiple-cropping after winter wheat in Ningxia, the whole growing period was122-day with spring seeding in Ningxia Southern Mountainous Area, and the planting areas are in consistent with those of Zhongyuandan-32 hybrid maize. The best yield capacity and nutritional components could be acquired through timely planting, rational close planting, field management and timely reaping. With whole-plant silage, the neutral detergent fiber content was 43% and the acid detergent fiber was 22% and the crude protein content was 8.2%.

关 键 词：早熟 青贮玉米 品种选育 复种 高产栽培 

分 类 号：S513[农业科学—作物学] S344.3