Preliminary Study On Alpine Water Bamboo Of Cultivation Technique With High Quality

This thesis has compared varieties of different altitude between "single cropping Zizania caduciflora"and "double cropping Zizania caduciflora",and has studied the influence of yield affected balanced fertilization and studied on biological characteristics of Helminthosporium zizaniae Nisik and the selection of indoor fungicides.The results show that:1 The yield of "Liu An Jiao" is extremely significantly higher than that of "Mei Ren Jiao" and "Yi Dian Hong";while the yield of experimental field of "Shiguan" is extremely significantly higher than that of "Qingtian".The defference of yield between "Zhe Jiao 2 Hao" and "Suo Zi Jiao" is not obviously,but both of two are higher than "Qing Lian 1 Hao"."Liu An Jiao" can be at the same time better adopted to the two experimental sites.The comprehensive evaluation of "Yi Dian Hong" is general and "Mei Ren Jiao" can't be adopted to the two sites.The comprehensive Evaluation is that "Zhe Jiao 2 Hao"is the best adapted to ShiGuan experimental site, "Qing Lian 1 Hao"is better adapted to Qingtian experimental site,but "Qing Lian 1 Hao"is not adapted to two experimental sites.2 The fertilizer experiments of water bamboo.The results show that:the application of N,P and K could significantly increase the yield of water bamboo, primary and secondary order N＞P＞K.The fertilizer quantity return to equation is that Y=10770.1+2162.1X₁+1389.2X₂-923.3X₃,When the quantity of the phosphate fertilizer and the potassium fertilizer is invariable,increasing unit's nitrogenous fertilizer,the ultimate output increases2162.1kg.When the quantity of the nitrogenous fertilizer and the potassium fertilizer is invariable,increasing unit's phosphate fertilizer,the ultimate output reduces 1389.2kg.When the quantity of the nitrogenous fertilizer and the phosphate fertilizer is invariable,increasing unit's potassium fertilizer,the ultimate output increases 923.3 kg.3 The biological characteristics of Helminthosporium zizania Nisik are investigated.The results show that the most suitable range of temperature is 10℃-35℃and the optimum temperature is 25℃for mycelial growth,the lethal temperature is 56℃for conidiospore.Within the pH range of 4-12,the mycelium could grow and produce conidiospore.The optimum pH is 6-9 for mycelial growth and conidiospore germination,the spore germiation is promoted sporulation on the condition of partial alkaline the optimum carbon sources for the growth of mycelium is lactose,fructose is the best for the germination of spore.The mycelial growth is promoted by Yeast extract as nitrogen source,Chloride and Yeast extract can promote the germination of spore,but Beef extract and Potassium Nitrate can't. The results of the selection of indoor fungicides show that:the fungicide of which is affected of inhibition the growth of mycelium and spore germination is 50% procymidome;secondly,it is propiconazole.The others have poor effect.