The Research On The Fertilization Biological Effect Of Low-Yield Moso Bamboo In Longquan City Of Zhejiang Province And Its Improvement Evaluation

The dimension of moso bamboo grove in Longquan city of Zhejiang province is very vast,but Most of moso bamboo grove in Longquan have poor site conditions,backward technology management and be in the low-yield and inefficient mode basically.The work of this study will provide scientific reliance of improvement low-yield moso bamboo grove by study of biologic effectation mode fertilization and evaluation.The study sites are 3 villages which are Xiaomei,Zhengbian and Shanxikou.It is 3 fertilizational modes,Pattern fertilization,Traditional fertilization and No fertilization(as a kind of contrast). We do survey for every bamboo in standardard ground and mensurate heigh, weight,biomass,wall thickness and other biological effective indicators in order to study biological effectation of different modes.The results showed that:(1)Pattern fertilization,the traditional fertilization and no fertilization have large influence to density and the average diameter breast-high.And the density and average diameter breast-high of Pattern fertilization are biggest of them.(194/666.7m~2,11.4 cm)There are significant differences from the other two modes.(2)The new bamboo average diameter breast-high is 11.6 cm.It is significant differences from the other two modes.The amount of new bamboo is 75/666.7m~2.There is varying difference among three fertilization patterns. (3)The average brench weight of per plant,leaf weight,and timber weight, the total weight of on the ground parts of bamboo is 5.23 kg,2.09 kg,29.62 kg, 36.94 kg in sequence.Brench weitht has very significant between fertilization and none.The weight leaf and timber has differentness.In unit area,the average brench weight of per plant,leaf weight,and timber weight,the total weight of on the ground parts of moso bamboo is 1015.61 kg/666.7m~2,405.86 kg/666.7m~2, 5751.9 1kg/666.7m~2,7173.38 kg/666.7m~2.And comparing no fertilization,the increase rate is 74.6%,49.4%,41.9%,46.2%in sequence.(4)Average internodal length of moso bamboo is 25.69 cm through pattern fertilization.The base and the top of moso bamboo are shoter and internodal length reaches the maximum of No.6 column under two ferterlization modes.Regression equation is Y=-1.1117X +13.678.Regression equation is Y=-3.4084X~2 +45.689X+12.56,between the length with the diameter of the central of bamboo column.By the pattern fertilization,the average ball thickness of moso bamboo is 0.89 cm,which is thicker 0.04 cm compared with no fertilization.The two have significant differentance.The weight is decreased with the increasing column sequence amount(from the date the base of bamboo). Regression equation is Y=8.7897e-0.2434X.Another regression equation is Y=-0.9464X+12.745 between its central diameter of column and location.(5)The average diameter breast-high has differentness in planting different bamboo density.Average diameter breast-high of breast height are 10.8 cm, 10.6 cm,11.3 cm,10.9 cm at the density level 1 to 4.The average diameter breast-high increased firstly.When the density of bamboo is continue to increasing,the average diameter is gradually declining.Diameter breast-high achieved maximum in the domain of 161 to 190/666.7m~2.(6)The difference of weight is extremely significant in different planting bamboo density.Correlation between bamboo high and density has no significant.Level 3 is the highest yield.Level 4 is higher than others.And level 1 is the least. (7)Under reclaiming,is the best ideal regression equation between timber height and diameter breast-high of bamboo is H=0.246X~2-3.554X+21.783.Another regression equation between timber weight and diameter breast-high is W=1.695X~2-30.364X+157.668.(8)After low-yield moso bamboo forest at Longquan City is improvement, bamboo forest average density is 154/666.7m~2.The older bamboo which is 4 and above 4 age proportion is 8%.And 1 to 3 ages is 92%.The ratio among 1, 2,3ages is 1.59:1.36:1.The average annual amount of wood is 573 kg/666.7m~2. The average diameter breast-high is from 10 to 12 cm mostly.And comparing "Low-yield moso bamboo forest projects technical specifications(Trial)in Zhejiang",All have been exceeded every index sign.And Low-yield improvement has demonstrable effects.(9)The economic efficiency of pattern fertilization is better than the traditional fertilization.The efficiency of per unit area increase by 128.6 yuan/666.7m~2...