| The experiment based on the status and prospects analysis of cellulose energy plants Panicumvirgatum at home and abroad, combined with the status of natural conditions of Anda City,discusses the feasibility of Panicum virgatum grown in the area. Anda City Natural saline soil areais larger, the salt in the soil is sodium bicarbonate, soil pH value higher, salt content in cultivatedsoil for0.066-0.153%, salt content of grassland in0.2%to3.0%. Through planting and detailedobservation of Panicum virgatum growth status for natural saline environment for three years, weclearly master Panicum virgatum growth process. We preliminary determine the part physiologicalindexes related its growth, biomass and important component content. At the same time, aftersalinity gradient stress experiment was conducted in the laboratory, we have determined thetolerance of Panicum virgatum on alkaline salt.Continuous survey results of three years of the show Panicum virgatum is a kind of perennialherbaceous plant, one year plant leading to years of income. Since the third year of the plant, eachindex can reach a higher level and plant height on average can reach2.16m in the slight saline land;Tiller number on average can reach6; Cellulose and hemicellulose content on average are36.65%and31.7%respectively;1000-grain Seed weights to9.1g.First we find that degree of salinity hassignificant influence on the germination and growth of Panicum virgatum. Second, we also findthat seed germinates earlier in mild salinization area and moderate salinity zone while later insevere area. Finally, we find that plants in mild salinization area and moderate salinity zone growwell and ones in severe area do badly, but slightly better than Other plants in the same blockThe salt stress experimental results show that: Panicum virgatum growth affected by saltstress is obvious, low salt can promote growth, high salt will inhibit its growth. When the seedlingemergence rate, plant height and biomass in the salt concentration are0.5%, it’s growth will be thehighest value; As the salt concentration increases, the Panicum virgatum growth rate will graduallyslow down, from strong to weak, but in high salt environment under3%some Panicum virgatumcan still survive.Related index measurement results in Panicum virgatum forage blossom have shown thecontent of crude fat and crude protein in the initial growth stage of Panicum virgatum are high, ashcontent is very low, and they can be used as high-quality forage. Panicum virgatum hay biomassgrowing in the test fields can achieve17t/hm2, and produce ethanol5667L according to75%ofthe ethanol conversion calculation, obtaining a high economic benefit..Comprehensive evaluation shows that Panicum virgatum can be used as a grasslandvegetation for planting. It could improve the local soil environment, stabilization of sands,prevention and control of soil erosion and land a greater degree of salinization; Panicum virgatumcan also serve as a kind of high quality forage grass cultivated in Anda and surrounding areas.Panicum virgatum promotes the local animal husbandry of better and faster development. At the same time, Panicum virgatum not only is a kind of energy plant, can obtain larger ethanol output,but also can get a lot of clean energy. At the same time, Panicum virgatum can also have greateconomic benefits. Therefore, Panicum virgatum cultivation in Anda and its surrounding areas hasa great practical application value. |
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