The apple is covered bag is OK make fruit face bright and clean, chromatic good, some people think to be covered bag with respect to everything is just fine, can abandon managing, do not know an apple to cover bag hind to still can appear a lot of problems, if be solved not in time, will be just the opposite to what one wished.
One, day bright is more. Its show appears yellow white to be on green peel, when fructification is comprehensive and chromatic, day bright part still is shallow white, producing an account is to cover bag hind to encounter high temperature, and fruit face and bag clingy, in intense sunshine point-blank below, cause fruit cover the organization is necrotic, produce necrotic spot. Strengthen orchard management, timely water, protective branches and leaves is normal development grows, be helpful for preventing " day bright " .
2, harm of Jie of pink of health family name is serious. Expression is occurrence macula of calyx depression place, if Jie of pink of health family name is inside bag kill, groovy gush medicine cannot kill his, breed in great quantities thereby, this asks must meticulous gush insecticide.
3, peel is coarse, have scale and anthrax place. Fruit surface is rough, have scale, this is a medicine of the gush before bag undeserved, with medicine unreasonable the harm that cause, or because branches and leaves chafes,be, the rusty spot that later period forms, the happening that anthrax nods likelihood and pick antiseptic medicine concerns not seasonable gush after bag, also likelihood and pick bag is premature about.
4, bitter blain disease happens. Because fructification is short of calcic be caused by,this is, set gush 3~4 answers to all over calcic fertilizer before bag, cultivate next adding to apply organic fertilizer, increase calcic element to supply.
5, straighten to become rusty with fruit shoulder fruit depression heavier. Because the stalk when gush medicine is depression,this is inside the pesticide be caused by of stockpile. Covering normative operation wants when bag, plunge into close bag mouth, avoid medical current to arrive stalk is depression inside stockpile.
The welcome reprints fruit grower of service whole nation extensively
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Come from today's top headlines [middle peasant is happy] if was not reprinted by the requirement, uniform regard tort as
