种植密度对不同类型玉米青贮产量和营养价值的影响

庄克章,吴荣华,张春艳,徐立华,徐相波,丁一,王振南

Effects of Density on Yield and Nutritional Value of Different Types of Silage Maize

Kezhang Zhuang,Ronghua Wu,Chunyan Zhang,Lihua Xu,Xiangbo Xu,Yi Ding,Zhennan Wang

表3 密度对两个青贮玉米品种营养价值的影响

Table 3 Effects of density on nutritional value of two silage maize varieties

品种 Variety 密度(株/hm2)Density (plant/hm2) 粗灰分含量(%) Crude ash content 中性洗涤纤维含量(%) Neutral detergent fiber content 酸性洗涤纤维含量(%) Acid detergent fiber content 可消化干物质(%) Digestible dry matter 干物质采食量(%) Dry matter intake 相对饲喂价值 Relative feeding value 雅玉8号 60 000 8.89d 72.43c 20.24c 73.13a 1.66a 93.95a Yayu 8 75 000 9.21c 73.13bc 23.73b 70.41b 1.64ab 89.54b 90 000 9.63b 74.11ab 25.70a 68.84c 1.62b 86.39c 105 000 10.13a 74.80a 26.10a 68.57c 1.61b 85.29c 登海605 60 000 8.15d 71.90a 18.64b 74.38a 1.67a 96.21a Denghai 605 75 000 8.88c 72.61a 21.13a 72.44b 1.65a 92.78b 90 000 9.30b 72.97a 22.60a 71.29bc 1.64a 90.87b 105 000 9.84a 72.72a 20.88a 70.54c 1.65a 90.23b