Respecting expires pesticide, the first reaction of everybody is to be handled, expired like milk, everybody is affirmative throw away for a short while. But expire is pesticide already degenerative or already invalidation? Also not be actually such! So, expire does pesticide return what can you use after all?
Above all, since be to expire,a lot of people think pesticide, according to general habit, that affirms even if " degenerative, invalidation " , cannot sell again, use. But actually pesticide is a kind of special commodity, its expiration period is the anticipation that according to regular dose next ill to the plant, insect pest should achieve result of prevention and cure is certain. A lot of a lot pesticide, want to increase use dosage appropriately only, use strictly according to scientific method, still have reduce the bug, effect that prevent disease very well. And the general merchandise such as overdue food, it is apparently " invalidation, degenerative " or not " safe " , cannot eat through how, multi-purpose will solve a problem.
Next, pesticide noxiousness big, contamination is strong, we cannot easily its destroy by melting or burning. Even if professional technical staff, adopt special technical measure its destroy by melting or burning, also can accomplish only reduce pollution as far as possible, and cost of destroy by melting or burning is bigger. Accordingly, also do not advocate the pesticide that will expire completely destroy by melting or burning.
The 3rd, before using drug, should see produce date and expiration period, the expiration period still is done not have, should pass strictly according to expiration period of directive dosage use; before long, should according to its medical effect case is suitable increase dosage. Because of some pesticide once outdated, although,medical effect reduces some; pesticide subsequently outdated, but medical effect still connects basis is changeless. Be with, when use outdated pesticide, the first time use quantity wants necessarily according to medicine of directive dosage gush, after day of the 3-5 after using, look carefully at its to reduce ill bug result, if the result is not very ideal, can be in originally basically appropriate increase dosage if; remains the same 2 times as a result after gush not apparent, the effect after if use,using pesticide; alternately is distinct, can continue to use.
The 4th, want to develop level to hold dosage according to crop. Lie especially the crop of seedling stage phase, foliaceous area is small, also want to be cut down accordingly with dosage, but spray pesticide still should press directive dosage scale matchs add. In other phases, but right amount add expire the dosage of pesticide.
Finally, pesticide sprays even average. Spray when pesticide, should make liquid medicine concatenate from beginning to end go up in the pressure graduation mark of air chamber, below such pressure, ejective medicine leads to petty droplet, can adhere to on average in blade, hind back. When spraying commonly, put spray head below crop lamina, on mouth opening day, blade, hind carry Dou Nengping on the back to all spray, need not transform shower nozzle position, ordinary in season 1 had better, cannot undertake in same hour gush is applied for many times, send crude drug easily to kill otherwise.
Actually, expire pesticide is not is " invalidation, degenerative " pesticide, anticipate the pesticide of use effect according to short of of former use dosage however. After increasing dosage appropriately, a lot of expire pesticide still can be used. And, will tell from the angle of environmental protection, will expire pesticide " use " , enrage than costing force apparently its destroy by melting or burning more be to one's profit. Is everybody looks such?
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