Pineapple is a tropical fruit native to the Amazonian basin of Brazil and Paraguay in South America and has now spread throughout the tropics. Pineapple has three results in one year, and the quality is best from March to August. The fresh food is fresh in fruit color, the fruit shape is correct, the fruit body is solid, and the maturity is 80%.
At present, the winter fruit of pineapple has gradually changed color, the skin is thin, and the taste is sweet. It is easy to cause the bite to eat the fruit, causing the wound, causing the pineapple to rot and deteriorate, and also reducing the cold resistance, so that the fruit is susceptible to freezing damage in winter. Therefore, during the ripening of pineapple winter fruit, attention should be paid to poisoning and killing to protect the fruit. The control techniques for the ripening of winter fruit pineapple are as follows:
During the ripening of the pineapple fruit, the poison bait is placed in the pineapple garden every 10~15 days, and it is continuously placed 2~3 times, each time 3~5 kg per acre orchard, and 25~30 points in the orchard. Deliver 80~100 grams. Preparation method of poison bait: take 10 kg of high-quality rice bran, 250 ml of 48% chlorpyrifos, 250 ml of 4.5% cypermethrin, 250 g of yellow sugar, 1000 ml of water, dissolve the yellow flakes in clear water, add chlorpyrifos and cypermethrin, stir well and mix well. Pour into high-quality rice bran, stir while stirring, and mix it evenly, then become a poison bait, you can use.
If the fruit is found to be seriously damaged, spray 1000 times 2.5% deltamethrin aqueous solution or 1000 times 2.5% cyhalothrin aqueous solution in the evening to evenly spray the leaves and fruits of the pineapple plant to start to have water drops. It is advisable to drop it down. After biting the ripe pineapple, it will be poisoned and killed. It is usually sprayed every 7~10 days and sprayed twice. Spraying should be stopped 10 days before fruit picking.
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