Mr. Zou Yumin goes the discovery when Qu Fu Wu Cun presses down instructor, a few fruit grower lack malic garden tree department uses grow went up pear tree, this kind of practice is very wrong.

Because pear tree is the host of in spite of illness of disease of malic beautiful face. Pear tree breed contains virus generally, and for recessive symptom, plant and fructification are not behaved, but can travel. Spreading way is to adopt pear tree and malic tree root system after mutual across, root of the injury that feed a tree or subterranean pest gnaw root system, pour out of virus fluid to travel each other. Accordingly, prohibit in production malic tree and pear tree are mixed grow, build malic garden to should be far from the operatic circle as far as possible, mix grow the pear tree in malic ground to answer instantly dig is dropped.

If already discovered the diseased or infected plant that comes on first, can use beautiful face after spring changes aspic health root of fill of 500 times fluid, 30~40 of every individual plant jin, budding hind again fill. When the sap before Pure Brightness flows, in truncal get on a few to delimit up and down with the knife, use paint of fluid of the Kang Yuan that spend a face next. The gush before blossomming 800 times beautiful face health, gush is connected twice after Xie Hua 1000 times beautiful face health. Early discovery early treatment, seasonable passivation spends facial virus, its symptom won't be shown come.

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