摘要
通过在山西平朔安太堡露天煤矿复垦区的田间试验,研究生物有机肥与化肥配施对复垦土壤饲草玉米生长及肥料利用率的影响。结果表明,不同施肥处理对不同生育时期饲草玉米株高、茎粗和生物量均有提高作用,且生物有机肥与化肥配施处理效果好于单施化肥,而以单施生物有机肥效果最差;不同施肥处理对不同生育时期饲草玉米N、P、K含量及养分吸收量均有提高作用,且生物有机肥与化肥配施处理效果明显好于单施化肥,而以单施生物有机肥效果最差;与单施化肥处理相比,生物有机肥与化肥配施饲草玉米N肥、P肥利用率分别提高了37.79%~84.25%,27.85%~102.66%,且HS2处理(化肥+1.5倍生物肥)N肥、P肥利用率分别达到62.46%和24.38%。不同生育时期饲草玉米生长及N、P、K含量都为生物有机肥与化肥配施效果好,而HS2处理N肥、P肥利用率最高,故HS2处理为最佳施肥方案。研究结果可为复垦土壤饲草玉米生长及肥料利用率的提高提供理论依据。
Through the field experiment in the reclamation area of Antaibao open-pit coal mine in Pingshuo, Shanxi, the effects of bio-organic fertilizer and chemical fertilizer application on the growth of forage corn and the fertilizer utilization rate were studied. The results showed that different fertilization treatments could increase the plant height, stem diameter and biomass of forage corn at different growth stages, and the effect of combined application of bio-organic fertilizer and chemical fertilizer was better than that of single application chemical fertilizer, while the effect of single application of bio-organic fertilizer was the worst. Different fertilization treatments had an effect on the N, P, K content and nutrient uptake of forage corn in different growth stages, and the effect of bio-organic fertilizer and chemical fertilizer treatment was significantly better than that of single application chemical fertilizer, while the effect of single application of bio-organic fertilizers was the worst. Compared with single application of chemical fertilizer treatment, the utilization rates of bio-organic fertilizer and chemical fertilizer combined with forage corn N fertilizer and P fertilizer increased by 37.79%-84.25% and 27.85%-102.66%, respectively, and N fertilizer and P fertilizer utilization rate of HS2 treatment(chemical fertilizer+1.5 times bio-organic fertilizer) were 62.46% and 24.38%, respectively. The growth of forage maize and the contents of N, P and K in different growth stages were better for the combination of bio-organic fertilizer and chemical fertilizer, while the use efficiency of N fertilizer and P fertilizer was the highest in HS2 treatment, so HS2 treatment was the best fertilization program. This study will provide a theoretical basis for the growth of forage corn and the improvement of fertilizer utilization rate.
作者
刘焕焕
王改玲
李晓龙
江山
LIU Huanhuan;WANG Gailing;LI Xiaolong;JIANG Shan(College of Resource and Environment,Shanxi Agricultural University,Taigu 030801,China)
出处
《山西农业科学》
2019年第9期1564-1568,共5页
Journal of Shanxi Agricultural Sciences
基金
山西省科技重大专项(20121101007)
关键词
复垦土壤
生物有机肥
饲草玉米
肥料利用率
reclaimed soil
biological organic fertilizer
forage maize
fertilizer utilization rate
