沟覆盖材料对垄沟集雨种植饲草作物青贮品质和产量的影响  

Effects of furrow-mulching materials on nutritional quality and yield of silage crop

作　　者：胡广荣[1] 王琦[1] 宋兴阳 李富春[1] 张登奎[1] 张恩和[2] 刘青林[2] 王鹤龄[3] 

机构地区：[1]甘肃农业大学草业学院/草业生态系统教育部重点实验室/甘肃省草业工程实验室/中-美草地畜牧业可持续发展研究中心,甘肃兰州730070 [2]甘肃农业大学农学院,甘肃兰州730070 [3]甘肃省气候变化与减灾重点实验室/中国气象局兰州干旱气象研究所,甘肃兰州730020

出　　处：《草原与草坪》2017年第2期75-81,共7页Grassland and Turf

基　　金：国家自然基金项目(41461062;41161090)资助

摘　　要：为探究适合于半干旱地区垄沟集雨种植的环保沟覆盖材料,以玉米和高粱为试验材料,研究不同沟覆盖材料(生物可降解液体地膜、秸秆和生物可降解地膜,以无覆盖为对照)对玉米和高粱青贮品质、产量的影响。结果表明:秸秆覆盖处理下玉米和高粱的粗蛋白显著高于其他处理。玉米的中性洗涤纤维在秸秆处理下高于其他处理,并显著高于生物可降解液体地膜和生物可降解地膜处理;高粱的中性洗涤纤维在无覆盖处理下显著高于其他处理。玉米的酸性洗涤纤维在秸秆处理下显著高于其他处理;高粱的在无覆盖处理下高于其他处理,并显著高于生物可降解液体地膜和生物可降解地膜。玉米和高粱的相对饲用价值在生物可降解液体地膜和生物可降解地膜处理下高于其他处理,分别显著高于秸秆和无覆盖处理。玉米和高粱的青贮产量在生物可降解地膜处理下显著高于其他处理。综合分析得出,生物可降解地膜适宜作为半干旱黄土高原区垄沟集雨沟覆盖材料。In order to find out the environment-friendly protection mulching materials and improve nutritional quality and yields of silage crop in semiarid region,a field experiment with randomized complete design was conducted to determine the effects of different furrow mulching materials（ no-mulching,liquid film mulching,straw mulching and biodegradable film mulching） on crop（ maize and sorghum） nutritional quality and yields. The results showed that the CP of corn and sorghum with straw mulching were significantly higher than others. The NDF of corn with straw mulching was higher than others, and significantly higher than liquid film mulching and biodegradable film mulching. The NDF of sorghum with no-mulching significantly was higher than others.The ADF of sorghum with straw mulching was significantly higher than others. The ADF of maize with no-mulching was highest,and significantly higher than liquid film mulching and biodegradable film mulching treatments. The RFV of maize and sorghum with liquid film mulching and biodegradable film mulching was higher than others,and significantly higher than straw mulching and no-mulching respectively. The silage yield of maize and sorghum with biodegradable film mulching was significantly higher than others. It could be concluded that the biodegradable film was a suitable furrow mulching material in ridge-furrow rainwater harvesting systems in the semiarid areas on Loess Plateau.

关 键 词：垄沟集雨 沟覆盖材料 营养品质 青贮产量 

分 类 号：S359[农业科学—作物栽培与耕作技术]