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Autumn banana management measures
Bananas are the famous fruit of our city. In the autumn, the flowering buds of the new planting banana plant differentiate into the period of bud initiation, and also the budding and fruit growth period of the banana root plant. As the spring and summer climate in this year continues to be hot and dry, the vegetative growth of the banana roots and the new planting bananas will be affected. In addition, banana prices will be depressed and the banana farmers will relax their management. The management of the current banana orchard in the fall is the key to high-quality, high-yield bananas. The management measures are as follows: 1. Fertilizer and water management: The weather in autumn is hot and dry, with high temperature, low humidity, and large transpiration of banana leaves. It is also a rapid growth of banana plants, flower bud differentiation and bud initiation, and requires large amounts of plant water. Therefore, it is necessary to re-fertilize ground water, apply fertilization to increase potassium and nitrogen fertilizers, and apply phosphate fertilizer, which means that it is used twice a month for fertilization, and water is applied on sunny days, applied on rainy days, and combined with clear trenches. The amount of fertilization in autumn should account for about 25% of the total fertilization amount in the whole growth period. The fertilization should be suspended within one month before the buds are raised. At the same time, the soil of the banana plantation should be kept moist to keep the shallow water layer in the ravine, but the banana raft should not be stained with water. If there is a typhoon, it must be drained in time. Second, the comprehensive pest prevention: the autumn is banana leaf spot, scab, anthrax, mosaic heart rot, bunchy top disease, blight and other locusts, leaf curlers, weevils, thrips, red spider In the high-risk period of diseases and insect pests, we should pay attention to the timely spraying prevention and control while we are doing a good job of cleaning the orchard to remove the diseased leaves and remove the weeds in the field and eradicate the excess suckers. The insecticides can be used to control 800 times of 80% of dichlorvos EC, 20% of chrysanthemum 2000 times, 90% of trichlorfon 600 times, or spray control of alfalfa fog, alfalfa net and imidacloprid. Disease prevention can use 25% of the enemy to remove demulsifiable oil 1200 times, 25% of 1200 times, 30% of Ai Miao 1500 times, 70% of thiophanate-methyl 1000 times, 70% of Mancozeb 600 times, 75% of chlorothalonil Clear 800 times, 45% polysulfide gel 400 times and other pesticides, can be used alone or in combination with insecticides, pesticides must be used interchangeably. For the diseased plant strains and mosaic heart disease disease strains should be promptly excavated and lime disinfection disease points. The pink banana is susceptible to wilt disease, with rotten culms and stems. This disease is a newly discovered soil-borne disease in recent years. It should be prevented mainly. In the early stages of disease, pseudo-stems and leaf sheaths are sprayed with 1000 times the bacteria or 500 times the disease or copper. Master 1000 times timely prevention and treatment. Third, the ear care: 1, school bud broken buds: After the buds are drawn out, we must promptly poke the buds drooping or cutting off, so that it can droop smoothly, promote smooth, balanced growth and development; after the female flowers open 10-15 Days, that is, the last finger of the fruit comb, remove the lower bud when it is slightly upward, and pay attention to leave 1-2 fruit fingers at the end of the combing fault to promote balanced growth and development of the upper and lower fruit combs. Break buds should be carried out in the afternoon on sunny days to reduce the oozing of juice. 2. Sparse combing: In the event of breaking buds, the residual flowers at the end of the fruit finger should be erased by hand to prevent stabbing of the finger and entrained pests and diseases; at the same time, fruit thinning, sandwich fruit, curving fruit, twin fruit, etc. The deformed fruits are cut off with a banana knife, and each fruit comb retains 16-24 fruit fingers. The fruit thinning should be carried out in the sunny afternoon and the fruit fingers on each fruit comb should be arranged and tidy. 3, ear bagging: 15-20 days after the bud, with a light blue by playing a small round plastic bag set in the ear to the top of the fruit axis under the bend, the top with a rope tied, the bag at the end of its natural open . To prevent sunburn, there must be waste newspapers or dried banana leaves in the ear bag to isolate the banana fruit. 4, correct ear: the ear outward, the rope can be used to pull the end of the fruit tied to the false stem, so that the ear as far as possible perpendicular to the ground in order to promote balanced growth and development of the fruit finger is not distorted. IV. Anti-inverted cultivation: When the banana plant height is 1.5 meters or more, choose a suitable location next to the plant. Use a bamboo head with 4.5 meters in length and 5 centimeters in thickness to stand upright and bury it in a deep 50-60 centimeters. The Department tied the dummy stems to the bamboo poles at intervals of 80 centimeters, and tied them in three steps. This way, the Typhoon banana plant below class 4 did not fall. Fifth, to prevent sun: You can use dry banana leaves or straw to cover the upper end of the fruit axis; surface soil and cover the dried banana leaf or dry weeds to prevent the sun. Six, outside the root dressing: after budding can be used Gaole, green Wang, nucleotides, potassium dihydrogen phosphate, power 2003 and other foliar fertilizer, one of the optional fertilization, once every 10 days, 3 times in a row, Instead of spraying hormones to promote fruit, and promote fruit better.