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Paulownia Golden index of pest control


Type, we can ask under investigation paulownia forest diameter at breast height,[link widoczny dla zalogowanych], the corresponding theoretical calculation of the amount of storage leaves. 2.2 Golden worm food consumption Paulownia After three years of observational study, in the natural state, after a wintering adult insects and their descendants Paulownia Golden lives in a cumulative period of leaf-eating area 1421.28cm. , Weight 31.41g. 2.5 Artificial model arc test year after year growth of Paulownia different treatments (Table I) analysis of variance showed that the different degrees of loss of leaves on the tree height, crown width and crown height of the annual increment was no significant effect, but DBH and volume growth had significant influence by the LSR multiple comparisons, loss of leaves 10,[link widoczny dla zalogowanych], diameter and volume wrapped in a different pick leaf level of the tree chu, diameter, volume Yan in Kansas a long amount of Note: paulownia live set operation unit price of 300 yuan / to. Dollars. Growth and the year was no significant difference; loss leaves a significant difference of 30, lost more than 50% leaf there was a significant difference between the control index of 2.4 2.4 to determine songs. I hazard index is the index of the tree against the growth of the lowest population density operation,[link widoczny dla zalogowanych], the economic losses caused by the lowest population density. According to tests, loss of paulownia leaves 3O feet of diameter and volume growth for the year were significantly affected, so the amount of the damage when the population density of 30 as the Golden insect damage Paulownia indicators. According to the storage of Paulownia Paulownia leaf weight and food consumption of insects Jinhua, we accounted for the Golden insect damage Paulownia indicators (Table 2). 2.4.2 loss of value of the capsule 2 against Golden beetle crisis Jian Paulownia Indicators 25 - can be seen from Table 1, when the leaves of Paulownia will surge 10.3, ? 0, �� O,, eO, 1O0, single buildings The average grant were Tuo Qiao Free: 1. . t2 yuan. 3.18 yuan, 3. Yuan, 5.2; element, 7. n-8.04 yuan. 2.4.3 Prevention costs. According to recent string of prevention care practices,[link widoczny dla zalogowanych], pest control foam stick Jin Yan dance with every line l e thistle charges, forces, etc. for O. 20. 2.4.4 Economic benefits of economic benefits formula:. J: M a (in {)-J one by one economic benefits' - a loss of paulownia value of the Golden Flower, insect damage control training and flexible back l value. . F or two who still control the loss of value. f one by one control costs. According to the simulation experiment, control pest damage after the Golden Flower trailer cabinet control of rubidium in 1O% below the growth of lemon surgery affect me. Portugal lost ��} do not control the degree of earnings estimates for the following: loss of leaf 10. rj; 1. '2. (1.42 +02 c): a leaf 3, = 3.18 lf1.42 +0. ZO) l Shiji Song resistant, I = 3.90 (1.42 +0.2 o): 2; 28 (yuan) j,[link widoczny dla zalogowanych], 45. Jing Yi hesitate reef Index Theorem l lO% loss on the bubble palm leaf growth was not significantly affected up to 1O% in the degree of harm without sleep-inch control. Loss of leaf 3)% on the bubble stability Long-You-significant effect, which is invested per plant O. Posts can control costs 20 yuan 1.58 yuan income, investment income is 8 times. Turn the base of the pool of thick leaf-eating insects take the amount of 30, when the Union as the pest density ia ditch anti-yi indicators (failure 1). Golden beetle obscene 3 Paulownia embroidery bubble diameter governance indicators Fang Huang He Bei c blood vessel conditions 11214l0-15cJ less than twenty l5l8201Scnl 21) 2225 snapped a sleeping secret S-Sheng Zhen scorpion white real ugly ~ ~ 2.4.8 Governance Index ok i t] bear in recent years, the incidence of Paulownia Golden insects, control theory derived from practice and testing of anti-Cang indicators, and reference to respect for 'If nobelium pour, Tong disk flowers developed fishing practical pest control index (Table 3 .) 3 Summary and discussion 3.1 hilly area in western Henan Paulownia Network, film transfer leaves argue the amount of storage with the diameter at breast height per plant Mino, Department of regression formula is: W = 0.1519'��future generations a life term in the cumulative grade _ eat out for the funeral 1421.28cm3.3 results, loss of leaves 1O, extension on the diameter and volume growth Mu year there was no significant impact as required, 30% leaf loss was significantly affected more than 50% loss of leaf pillow seems that a significant impact. 3.4, although based on food consumption and other data the Division calculated the static of Paulownia Golden pest control index, and in recent years with the occurrence of hazards and control conditions with reference to relevant information, development of practical control index r. 3.5 pairs of foam beetle titanite Golden index of anti-slander, when the country has not set a precedent, not listless even before the} of a method, some theoretical and technical issues remain to be further discussion, need more observational study to explore and improve. (Alex Ching Feng responsibility He matched series) Call for Papers Ginkgo to promote the development of our province, to meet the production of sterile dried apricot on the collar, high yield and other information technology needs to be edited and published a magazine crushed apricot Album data or column. forestry science and technology workers will be welcome to have snapped their research results and practical experience to sum up, our staff welcome you to submission. More articles related to topics：


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