Effects of Cultivation Bag Placement Mode on Bag Temperature Stability and Yield of Auricularia heimuer
The optimal placement mode for Auricularia heimuer mushroom cultivation bags to grow in a shaded greenhouse was explored.Three placement modes,"一"shape placement without moving(Ⅰ),"一"shape placement with moving the top bags to the bottom 15 d after inoculation(Ⅱ),and"#"shape placement without moving(Ⅲ),were measured for bag temperature at different positions(top,middle,and bottom)and A.heimuer yield.The growth rate and activities of laccase and dehydrogenase of A.heimuer hyphae cultivated at 20 ℃,25 ℃,30 ℃,35 ℃,40 ℃ in Petri dish were also measured.The results show that the average daily minimum temperatures of the middle and bottom bags of Ⅰ,Ⅱ and Ⅲ were 30 ℃,28-31 ℃ and 24 ℃,respectively.The bag temperature stability from high to low was Ⅰ,Ⅱ,Ⅲ.The average yield per bag from high to low was Ⅰ,Ⅱ,Ⅲ.Mycelial growth rate and enzyme activities were higher at 30 ℃ and 35 ℃ than at other temperatures.The placement mode I was beneficial for maintaining temperature stability of cultivation bags,resulting in high mycelial vitality and high yield of A.heimuer.
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