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Ⅱ. IPM of Stone Fruits<br />
1. Scientific layout of orchards<br />
‣ Avoid planting apple, pear, peach and<br />
apricot together;<br />
‣ Choose resistant varieties to <strong>pests</strong>;<br />
‣ Rational density of trees<br />
‣ Enough basal fertilizer.
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