Abstract:

To improve and refine the fertilization of malting barley special fertilizer of application technology area in different ecological zones, to reduce the quality and environmental of impact due to excessive fertilization of malting barley. Study on fertilization of malting barley special fertilizer combining with the multi-point field plot experiments and analysis in laboratory in different ecological areas in Gansu Province. The results showed that there existed significant yield and quality improvements in combined application of specialty fertilizer for beer barley and Xindongli in treatments D and treatment E. The average yields reached 8056.8 kg/hm2 for treatment D, the yield was increased by 194.3 kg/hm2 and the income 426.6 yuan/hm2 compared with CK; and secondly for treatment E whose average yield was 8024.2 kg/hm2, increased by 161.6 kg/hm2 and the income by 364.6 yuan/hm2 compared with CK. Specialty fertilizer application technologies for beer barley in different ecological areas were determined based on the experimental results: basal application of 600 kg specialty fertilizer per hm2 and additional application of 120-150 kg Xindongli per hm2 in seedling stage were optimum amounts for Yumen, Minle, Shandan, ect. in desertification areas and mountain areas with an altitude of above 2000 m, organic fertilizer should be applied to preserve soil moisture and fertility in Yumen, Yongdeng, etc. where the soil was sandy and infertile; 600 kg specialty fertilizer per hm2 for basal application, furthermore basal applying or topdressing of 75-100 kg Xindongli per hm2 for beer barley were recommended in Jingchang, Wuwei, Jingtai, etc. in Hexi oasis irrigation areas; and for southern cold and damp mountain areas, it could be applied 300-450 kg specialty fertilizer per hm2 without any topdressing and mixture with other fertilizers.