Study on the effect of pig manure application rate on the growth of Pennisetum spp.
[Objective]In order to study the ability and safety of Pennisetum spp.to absorb manure excreted from swine farms,it was used as fertilizer to irrigate the Pennisetum spp directly,so as to explore the optimal proportion of its absorption capacity.This would achieve the purpose of reducing pollution from agricultural sources and the application amount of fertilizers and pesticides,and diver-sifying the substrate for edible fungi cultivation.[Method]There had 4 different levels about application rates of manure been set per season:120 kg/m2,180 kg/m2,240 kg/m2,and 300 kg/m2.Conducted a safety evaluation trial and comparative study of the quality and yield of Pennisetum spp.against a blank control group.[Result]Compared with the control group after harvesting,the application of 120 kg/m2 and 180 kg/m2 increased by 37.93%and 36.75%respectively in yield,with dark green leaves and tall plants;the yield of group 240kg/m2 increased by 15.36%,with deep green leaves and taller plants;however,the yield of group 300 kg/m2 decreased by 1.99%,with yellow-green leaves and shorter plants.The results of the safety study showed that it was safe to use Pennisetum spp.as feed with manure application of less than 300 kg/m2 per season.[Conclusion]The results showed that the Pennisetum spp.planted with 180 kg/m2 of manure showed tall plant type with dark green leaves.The implementation of this application had also led to a 36.75%increase in yield,as well as improvements in safety and reliability as feed.These findings suggested that the optimal manure absorp-tion capacity of Pennisetum spp.was 180 kg/m2.
万方数据
维普
