中国草地学报2026，Vol.48Issue(3)：111-121,11.DOI:10.16742/j.zgcdxb.20250366
施肥对天然草地产量、青贮品质及黄曲霉毒素B1含量的影响
Effects of Fertilization on the Yield,Silage Quality and Aflatoxin B1 Content of Natural Grassland
摘要
Abstract
In order to explore an optimal fertilization strategy in alpine pastoral area,six fertilization treatments were established:control(CK);organic fertilizer alone(5 250 kg/hm2);organic fertilizer(4 200 kg/hm2)combined with inorganic fertilizer(urea 45.6 kg/hm2,superphosphate 87.45 kg/hm2);organic fertilizer(5 250 kg/hm2)combined with biofertilizer(75 kg/hm2);organic fertilizer(4 200 kg/hm2)combined with inorganic fertilizer(urea 45.6 kg/hm2,superphosphate 87.45 kg/hm2)and biofertilizer(75 kg/hm2);and organic fertilizer(4 200 kg/hm2)combined with inorganic fertilizer(urea 45.6 kg/hm2,superphosphate 87.45 kg/hm2),biofertilizer(75 kg/hm2),and micronutrient fertilizer(450 mL/hm2).Forage yield was measured at the full flowering stage,and natural grass was ensiled for 60 days to determine the nutrient composition,fermentation characteristics,and aflatoxin B1(AFB1)content of the silage.The results showed that the fertilization treatments significantly increased forage yield compared with CK(P<0.05),whereas no significant improvement in forage quality was observed.The combined application of organic fertilizer,inorganic fertilizer,biofertilizer,and micronutrient fertilizer,as well as the combination of organic fertilizer,inorganic fertilizer,and biofertilizer,improved the silage quality of natural grass.Among these,the treatment with organic fertilizer,inorganic fertilizer,biofertilizer,and micronutrient fertilizer exhibited the best performance,with water-soluble carbohydrates and lactic acid content increasing by 74.36%and 15.33%,respectively,compared with CK(P<0.05),while neutral detergent fiber,acid detergent fiber,ammonia nitrogen content,and pH decreased by 17.80%,18.39%,65.67%and 4.04%,respectively.In addition,fertilization treatments significantly affected AFB1 content in the silage(P<0.05),with detected values ranging from 8.33 to 11.81 μg/kg,all below the national safety standard for feed.Comprehensive evaluation indicated that the combined application of organic fertilizer silage,inorganic fertilizer,biofertilizer,and micronutrient fertilizer achieved the best utilization of forage.This strategy is recommended for promotion and application in alpine pastoral areas based on local conditions.关键词
施肥/天然草地/青贮品质/黄曲霉毒素B1/综合评价Key words
Fertilization/Natural grassland/Silage quality/Aflatoxin B1/Comprehensive evaluation分类
农业科技引用本文复制引用
周馨月,尹国丽,董晓慧,何听听,王召龙,徐双鹏,梁文斌..施肥对天然草地产量、青贮品质及黄曲霉毒素B1含量的影响[J].中国草地学报,2026,48(3):111-121,11.基金项目
甘肃省科技厅重点研发计划(25YFNA028) （25YFNA028）
甘肃省科技厅东西部科技协作专项(24CXNA037) （24CXNA037）
国家牧草产业技术体系(CARS-34) （CARS-34）
