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This article to Tunisia soft pomegranate and local suitable varieties taishan red as testmaterials, in2011~2013in shandong agricultural university experiment base, combined withthe other around pomegranate cultivation frost damage situation investigation statistics,inquiry and prevention of low temperature and physiological drought of pomegranate (inTunisia, and secondly mount taishan red) freezing injury caused by the changes oftemperature factor were analyzed in detail and the formation of frost injury, and based onfrozen dry survey results, the use of modern physical control, chemical control (newantifreeze and new type of growth hormone) technology, the comprehensive study ofpomegranate freeze injury mechanism and antifreezing technology, to develop effective andpractical techniques of freezing injury prevention. The main results were as follows:1. Different physical protection measures of Tunisia soft seeds pomegranate jellydrought prevention and control effect were remarkable. Facilities greenhouse cultivation andprotection to the ground part of pomegranate bent all buried in the soil was the test of physicalprotection effect, the two most significant protection measures can ensure100%of Tunisia’ssoft pomegranate son not cold; Cold hardiness breeding seedlings could improve the rootpomegranate its frost resistance, protection effect, cold resistance breeding seedling coldinjury ratio of4class above the root which the part has not been all freeze to death rate was85%;Second protection effect was good physical protection measures tied the byproduct withquilt (don’t lift too soon), corn stalk and plastic sheeting (soil), cover the byproduct (soil),DangFengQiang or shelter forest, trees ridging, covering grass. Bound bound among them,the byproduct stamp quilts, corn stalk and plastic sheeting, and tied the byproduct similarprotective effect, namely0level adjustment was no seas at about30%, the ratio of cold partsnamely the ground are all in grade4freezing rate of about10%; Outdoor plant cold namelyroots in level5to freeze to death ratio of69%, and take the windbreak protect cultivated level5cold was28%; Take ridging to protect cold parts namely the ground are all in grade4frozeto death and the root of survival percentage (32%), and covering grass protection coldproportion reached55%in grade4.2. Before the leaves spraying PP333and KH2PO4(at least) three times of Tunisia softseeds pomegranate jelly drought prevention and control effect was remarkable. Can increase plant soluble sugar content and water content, the control tree, can improve the plantresistance, reduce frost drought degree. After spraying PP333three branches of the solublesugar content than ck increased by0.91%, the moisture content increased by1.7%. Afterspraying KH2PO4three branches of the soluble sugar content than ck increased by1.49%, themoisture content increased by2.8%.3. The combination of physical and chemical protection measures of Tunisia soft seedspomegranate jelly drought prevention and control effect was remarkable. Such as corn stalk,and cover plastic spraying antifreeze and transpiration resistant agent can act as a doubleprotection, tied the byproduct, plastic sheeting can improve plant outside the environmenttemperature, spraying antifreeze and transpiration resistant agent can improve plantphysiological activities, improve its frost resistance, dual protection, comprehensiveprevention and control of Tunisia soft seeds pomegranate jelly drought to occur.4. Before winter spraying antifreeze pumped milk quality proof protectant to Tunisia softseeds pomegranate jelly drought prevention and control effect was remarkable. Among them,daub or spraying section of paraffin wax, industrial paraffin, liquid paraffin, glycerin,transpiration resistant agent and100%wet glue,70%Vac+0.2%dry wet glue, high lipidmembrane and covering film soft bag processing of Tunisia and seeds pomegranate branches,respectively, compared with the controls to reduce water loss rate of15.1,11.4,9.4,7.8,6.7,4.3,6.7,4.3and1.4%. Sliced paraffin and industrial paraffin wax treatment of Tunisia softseeds pomegranate filtration rate lowest branches, respectively,15.1and15.1percentagepoints lower than contrast and solid paraffin after spraying on the surface plant antifreezedrought condenses into a layer of transparent protective film, both breathable and can preventmoisture volatilizes of transpiration from the branches and water retention.
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