First, fertilization. Young pine trees need to be applied once a month or every other month, mainly in farmyard fertilizers. Less or no chemical fertilizer is applied to make fruit trees grow faster and sooner. Second, promote early flowering results. The grafted tree pineapple usually begins fruiting 5 years after planting. The seedlings will take 8 to 10 years to bear fruit. In order to promote early flowering results and inhibit vegetative growth, when the main stem of a pineapple tree grows to 30 cm thick, a knife is used to chop a few knives around the tree to the xylem to suppress vegetative growth and make it grow early. After harvesting fruit once a year, the trees will be cut down once to achieve high yields early. Third, the fruit tree fertilization. The pineapple, which has been fruited, applies its first fat when it spits buds at the beginning of spring. Apply a second fertilizer when the buds are withdrawn. When the fruit rapidly expands, apply the third fat again. Each fertilizer should be farm-based fertilizer, suitable for NPK fertilizer. The amount of fertilization depends on the growth, age, and tree vigor of the tree pineapple and the fatness of the land. Fourth, trim. When the tree pineapple grows to a height of about 200 centimeters, it is selected to be topped at noon on sunny days, and it is divided into 3 to 5 inches into an umbrella-like distribution. Later, when fruit is harvested, the fruit-bearing branches that have been removed from the tree stems are cut off, and the male flower branches and the bisexual flower branches that have fallen in the middle are cut off at the same time. The dense branches and the branches of the delicate branches are cut off. V. Exterminators. Insect pests of tree pineapple generally have two kinds of beetles and beetles. Tianniu mainly eats fruit and tree stems. It is necessary to timely scrape the eggs and capture adult insects, and add dipterex with a 500-fold solution of 1:1 (ie dimethoate 250 g plus trichlorfon 250 g watered. Spray 250 kg) to kill the larvae of the longhorned beetle. The main leaf of the beetle can be used to spray the crown leaves with 25% Zhongkemeiling 1500-2000 times liquid. The disease mainly consists of young fruit anthracnose, which damages the young fruit. Use 0.5:1:100 Bordeaux to spray fruit. Can also be used carbendazim 700 times solution or thiophanate 1000 times liquid spray fruit. The above liquid medicine in the fruit when there is a small spot, it is necessary to control the application of pesticides.
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