论文部分内容阅读
一、林间生境适宜食用菌的周年生产 林间的气候与裸地相比,往往有较大差别。据测定,常绿树林间0—20厘米深土层的温度早晚平均比裸地高出2.8℃;林间夏季日平均气温比裸地低2—5℃;林间绝对湿度比裸地高1—3毫巴,相对湿度比裸地高10—20%;当裸地风速每秒达3米时,林间2米高处平静无风,裸地风速每秒达6米时,林间2米高处风速每秒仅1米;林间每日产氧气约48.7公斤,比裸地高出许多,这是因为树木进行光合作用时要放出大量氧气和吸收大量二氧化碳之故;林间土壤pH值一般为4—6.5,这种酸性土壤不适合细
First, the forest habitat Edible mushroom annual production forest climate compared with bare land, often have a greater difference. It has been determined that the depth of 0-20 cm deep soil layer in evergreen trees is 2.8 ℃ higher than that in bare soil on average. The mean daily temperature in summer is 2-5 ℃ lower than that in bare soil; the absolute humidity in forest is 1 higher than bare soil -3 mbar, relative humidity 10-20% higher than the bare ground; when the bare ground winds up to 3 meters per second, the forest 2 meters high calm and windless, bare ground wind speed of 6 meters per second, the forest 2 Meters at a wind speed of only 1 meter per second; daily oxygen production in the forest about 48.7 kg, much higher than the bare land, because trees emit photosynthesis of large amounts of oxygen and absorb large amounts of carbon dioxide so the forest soil pH Generally 4-6.5, this acidic soil is not suitable for fine