Effect of biogas slurry as topdressing fertilizer on yield of hybrid seed maize and soil properties were studied in this paper.Hybrid seed maize were planted with randomized block,and it was determined and analyzed for its economic characters and benefit,soil chemical properties,and yield.The results showed that the soil of treatment T1 (1500 kg biogas slurry · hm-2 + 142.50 kgN · hm-2) had the highest organic matter content,which had a significant difference from other treatments.And it also had the highest soil available potassium,reaching up to 12.67 g · kg-1,which was significant different from treatment T2 (22500 kg biogas slurry· hm-2 + 138.75 kgN · hm-2) and CK(150 kgN · hm-2).The soil available P,pH,conductivity of T1had no significant difference from other treatment.The line number,grain number of each line,and grain weight per ear had no significant difference among treatments.Treatment T3 (30000 kg biogas slurry · hm-2 + 135 kgN· hm-2) had the highest 1000-grain weight,which had significant difference from CK,T2,and T4 (37500 kg biogas slurry · hm-2 + 131.25 kgN · hm-2).Treatment T2had the best yield and production value.All these showed that applying biogas slurry as topdressing fertilizer could improv yield and reduce production cost but should combine with chemical fertilizer.
hybrid seed maizebiogas slurryyieldssoil chemical propertiestopdressing
NETL
NSTL
万方数据
维普
