Effects of Different Mixed Patterns of Cunninghamia lanceolata on Forest Cultivation and Soil Nutrients
In order to study the effects of mixing between Cunninghamia lanceolata and Mytilaria laosensis,Cunninghamia lanceo-lata and Pinus massoniana,and Cunninghamia lanceolata and Michelia macclurei on the growth and soil nutrients of Cunninghamia lanceolata in pure forest.By measuring the growth,soil nutrients and physical properties of Cunninghamia lanceolata,it was found that the average DBH,tree height and crown width of Cunninghamia lanceolata were significantly increased in mixed forest,and the mixed forest of Cunninghamia lanceolata and Michelia macclurei was the best.The contents of soil organic matter,available N,available P and available K were significantly increased,the soil moisture and stomatal conductibility were significantly increased,and the soil density was decreased,which could significantly improve the soil,especially the soil physical and chemical properties were the best improved under the mixed mixture of Cunninghamia lanceolata and Michelia macclurei.