Film Forming Property Characterization And Application Of Pinolene On Leaf

Pineolene is a substance present in the rosin.It is a cycloolefin dimer and has good film-forming properties.In this dissertation,pinolene was used as the research object to characterize the morphological characteristics of pinolene on the surface of leaves.The key data of photosynthetic gas exchange before and after pinolene treatment were analyzed,and pinolene in rainwater was detected and analyzed.The ability of the pesticide to increase the residual period under light.The result is as follows:1.Characterize the film forming characteristics of the film former on the blade surface.The PW-100-011 scanning electron microscope was used to observe the surface of Photinia fraseri,Pinus massoniana and Carya cathayensis treated with pinolene and chitosan-polyvinyl alcohol composite membranes.Pinolene and chitosan-polyvinyl alcohol formed in a continuous film layer on the blade surface.Thiacloprid microcapsule particles were coated under pineidene diene and chitosan polyvinyl alcohol composite film,but the encapsulation method was different,and in the same treatment with pineidene diene,pinezondiene concentration The high-treated thiacloprid granules were coated tighter and formed multiple lateral stripes on the surface of the thiacloprid microcapsules.2.Determine the effect of film former on photosynthesis of plant leaves.The key data of the photosynthetic exchange gas was measured using a LI-6800 portable photosynthesis analyzer.The gas exchange results showed that pinolene inhibited the transpiration rate?Tr?,stomatal conductance?Gs?,and intercellular CO₂ concentration?Ci?of the plants.However,the net photosynthetic capacity of plants had no significant effect;the application of CS-PVA composite membrane resulted in different transpiration rate?Tr?,stomatal conductance?Gs?,photosynthetic rate?Pn?and intercellular CO₂concentration?Ci?.In particular,the three indicators in the 3%Pinolene treatment group decreased by15.47%,16.05%,and 5.73%,respectively,but had no significant effect on the net photosynthetic rate?Pn?of the plants.The results showed that the addition of pinolene can inhibit the stomatal conductance and transpiration of the plant,but at the same time it will not affect the photosynthesis of the plant too much.Therefore,pinolene can be used as a foliar spray filming aid.3.The ability of rainfastness after mixing pinolene and pesticides was studied.Waters-class ultra-high performance liquid chromatography was used to detect the amount of thiacloprid on the leaves of Hickory after washing with rainwater.The control group only retained 1.44%of the initial amount of thiacloprid at 0.5 h of rainfall,whereas the treatment group with 1.2%of pinolene and 3%of pinolene retained 5.53%and 19.07%of the original dose respectively.The loss of leaf surface caused by rain erosion is reduced,thereby extending the efficacy of thiacloprid.And rainfastness capability at high concentrations of pinolene treatment stronger than low concentrations.The results showed that pinolene could form a film on the surface of Photinia,locked the drug particles and improve ability of pesticides rainfastness.4.To study the anti-photolysis of pesticides after mixing with pinolene.The amount of Emamectin Benzoate residue retained after photolysis by a Waters 600 high-performance liquid chromatograph.After treatment with light for 8 h,the Emamectin Benzoate control group retained30.91%of the initial addition amount,while the addition of 3%pinolene treated group retained70.06%of the initial addition amount.The results showed that pinolene can effectively anti-photolysis,slow down the speed of drug photolysis,thereby prolonging the efficacy of Emamectin Benzoate.5.To prevent and control the Macrophoma caryae,a field control test of pinolene was conducted.Controlefficacywas34.01,42.78,and36.18with10%tebuconazoleEC,36%quinoline·tebuconazole suspension agent and 50%quinoline copper wettable powder alone.When1.2%pinolene was added to the pesticide,the control effect was significantly increased,reaching50.95,64.63 and 61.93.The results showed that the application of 1.2%pinolene had a better control effect against Macrophoma caryae.Pinolene can form a continuous film on the leaves and branches of plants,which can help the drug adhere to the surface of the plant leaves,and improve the rainfastness and anti-photolysis ablitily of pesticides,so that the pesticide can be obtained on the surface of plants longer.Pinolene is derived from turpentine,environmentally friendly and suitable for spray control of forest diseases and pests.