桔树受冻后的补救良药──叶面肥桔树是耐寒能力较弱的树种。当气温下降至零下５℃时，叶片就会受到不同程度的冻害。气温越低，持续时间越长，冻害越严重。据科研部门试验，桔树受冻后及时喷施叶面肥补救，效果很好。这样不仅可以使健叶叶色由淡变浓；枝条由软变硬，而且... The remedy for the freezing of orange trees ─ ─ Foliar orange trees are cold hardy species. When the temperature dropped to minus 5 ℃, the leaves will be subject to varying degrees of frost damage. The lower the temperature, the longer the duration, the more severe frost damage. According to the scientific research department test, foliar fertilizer remedy was sprayed in time after being frozen in orange trees, the effect is very good. This will not only make the leaf color leaves thinner and thicker; branches hardened by soft, but also ...