[{
  "type": "article-journal",
  "title": "THE EFFECT OF PROTECTION FILM ON THE ADAPTATION OF ‘HANFU’ APPLE TREES UNDER LOW TEMPERATURE",
  "author": [
    {
      "family": "Zhang",
      "given": ""
    },
    {
      "family": "Ma",
      "given": ""
    },
    {
      "family": "Lü",
      "given": ""
    },
    {
      "family": "Qin",
      "given": ""
    },
    {
      "family": "Du",
      "given": ""
    },
    {
      "family": "Liu",
      "given": ""
    }
  ],
  "issued": {
    "date-parts": [[2015]]
  },
  "container-title": "Journal of Animal and Plant Sciences",
  "ISSN": "1018-7081",
  "volume": "25",
  "issue": "3",
  "page": "220-225",
  "DOI": "NA",
  "abstract": "<p>In this study, &lsquo;Hanfu&rsquo; apple trees were used as a test material to determine the effect of a functional protective film on the ability of the trees to withstand temperatures below zero. The functional protective film is a quaternary copolymer prepared by emulsion polymerization of vinyl acetate (Vac), butyl acrylate (NbA), methyl methacrylate (MMA) and acrylic acid (AA). The resulting copolymer was modified by adding a thermal insulation material (ceramic powder) to enhance the insulating properties of the film. Compared with a control, application of various quantities of the protective film resulted in as much as 2.5℃ decrease in the semi lethal temperature for &lsquo;Hanfu&rsquo; trees. The insulating protective coating effectively reduced the MDA (malondialdehyde) content and significantly increased the activities of antioxidant- enzyme in the tree branches, which improved the low-temperature adaptability of the plants helping them to maintain normal physiological functioning. In the four treatments, protective films with the addition of 4% and 6% thermal insulation offered better protective effects</p>",
  "publisher": "Pakistan Agricultural Scientists Forum",
  "URL": "https://thejaps.org.pk/AbstractView.aspx?mid=2015-JAPS-333"
}]