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Is making bananas fruiting period disease prevention management
The period from the end of September to the beginning of November is the time for the development of banana planting (spring planting). From the bud to the harvest period, it is a key link to improve the quality and market competitiveness of banana products and increase the export of bananas. One, the focus should grasp the following six aspects of technical measures: First, ear care. 1. School buds: After the banana buds are drawn out, some buds droop when they hit the petiole or leaves, affecting the buds drooping smoothly, easily injuring the fruit axis and pericarp. The light results in reduced yield and quality, and even severely breaks the fruit axis and loses. Therefore, it is necessary to promptly remove or cut away the leaves that impede the drooping buds so that the buds can droop smoothly. 2, thinning fruit: all the sandwich fruit finger, curved fruit finger (lion head), twin fruit fingers, three fruit fingers should be removed, so as not to harvest when the fruit shape is not neat, the most ideal is to leave each comb 16 -24 fruit fingers. If the combing fruit index reaches 28 or more, the fruit should be thinned as appropriate. The fruit thinning should be grasped by the fruit finger combing on the blossoming of flower buds. The fruit thinning effect is better when flattened; if the head combing fruit fruit index is less than 12, only Treated as unqualified, combing and combing are discarded. When the fruit is thinned, the wound should be wrapped with absorbent or handkerchief paper to prevent the banana juice from the wound from being contaminated by the skin of the following finger. The fruit should be cleared in the sunny afternoon. get on. 3, stay comb: As the growing season of banana fruit is positive during the cold season, if the number of combs left in the ear is too large, it will be unfavorable for the growth and thickening of the fruit fingers, and it will also cause the uneven size of the whole bunch of fruit and vegetables to be unevenly weighed, thus reducing The quality and commodity value of bananas are usually 6-9 combs per fruit cluster. The banana grows stronger and has more functional leaves. It should leave more combs; 4. Wiping: The removal of flowers from the banana flowers of the whole bunch of spikes should be carried out in batches in batches. The first unfolded banana flowers should be first erased, and the later expanded banana flowers should be wiped off. Smearing time is generally controlled by the fruit of the fruit comb when the fruit fingers are flat (about parallel to the ground), and when the banana flowers on the fruit comb are 2/3 dark, the banana flowers on the fruit comb are all wiped out. The flower is easy to drop, and there is less wound juice after the banana flower is erased. Too early to wipe the flowers will affect the growth and development of the fruit fingers, so that the fruit fingers become shorter or even unstable fruit; too late wipe the flowers are more juice, the juice is easy to pollute the peel. 5. Breaking buds: When the fruit finger of the last fruit comb is left, the buds are removed when slightly upward, and at the same time, leave 2-3 layers of fruit combing cuts at the end of the ear, and leave one at the end of the comb comb cut. The root fruit means that the bud should be carried out in the sunny afternoon. 6, bagging: first the tail leaves covered on the fruit axis, and then use a white woven bag to the ear (including fruit and tail) wrapped, and then put on a light blue plastic bag (Specifications: length 1.2m, width 0.7m, thickness 0.03mm), the upper end of the bag is fastened at the bend at the top of the fruit shaft, and the lower end of the bag opens naturally. Second, fertilizer and water management. Apply Zhuang Tail fertilizer as appropriate. Soil fertilization can be applied twice within one month after flowering of the flower buds, with quick-acting potash fertilizers as the main, with a small amount of available nitrogen fertilizer, and the application amount accounts for about 10% of the fertilization amount in the whole growing period; “plant power 2003†can be used for the extra-root fertilizer. 1200-times liquid, "Gorole" 500 times liquid, "Green No. 1" 1000 times liquid and other hormone-free foliar spray banana leaf and ear, spray once every 10 days, and even spray 3-4 times. It is recommended that the banana farmer not spray any hormones on the ears to improve the quality of the bananas. The banana plant needs less water during this period, and it should keep the soil “runâ€. Third, do a good job of "two defenses." 1. Anti-lodging: In the reverse direction of the buds, take a distance of about 10 cm from the bulbs (pig's head), insert a thick bamboo basket with a length of 4 meters or more into the soil 50-60 cm vertically, and then use a cloth or The rubber bands tied the dummy stems to the bamboo poles and tied them in three to prevent the banana plants from lodging. 2. Anti-frost: The heat-supply fertilizer and the fertilizer with high potassium content, such as grass ash, fire-burning soil and fully-composed rubbish soil, are used in the plantation garden to increase the cold-resistance capacity of the banana plant; during the cold period, the ear bagging is in the bag. The outer bend of the outer fruit axis and the base of the top of the banana plant cover the straw or the dried banana leaf, and the shallow water layer is maintained in the banana plantation ditch, which increases the humidity of the banana garden and can effectively reduce the frost damage. During the frost, the field smoke is kept cold After the frost has passed, it should be sprayed with water in time as early as the morning of the next day. Fourth, pest control. Focus on the control of flower thrips and weevil. Should use high-efficiency, low-toxic, low-residue pesticides, and pay attention to the alternating use of pesticides to improve the efficacy, the specific methods are as follows: 1, Hua Tuoma: just bud, timely on the bud of the top of the banana plant spray control, every 7- 10 days spray once, even spray 3-4 times, the use of agents: 80% DDVP EC 1000 times; 10% high efficiency cypermethrin EC 3000 times; 10% imidacloprid WP 1000 times. Buds buried deep in the soil in time after budding. 2. Weevil: In conjunction with the clear garden at the beginning of spring, the dead leaves were cut off, and the dead part of the outer layer of the pseudo stem was peeled off, and the leaf sheath of the insect was burned. Sliced ​​fake stems were placed on the surface of the banana plant to trap the adults. In the depression where the base of the petiole is connected with the pseudostem, a small amount of insecticidal granules is poured with liquid medicine on the sunny evening or on the base of the old leaf petioles. Pharmacy selection: 50% dichlorvos EC 800 times; 20% chrysanthemum 2000 times; 3% Miller granules. Fifth, ear harvest. Harvesting is appropriate when fruit plumpness is 75-80%. Harvesting was carried out with no ears, ie, a group of 2 people. One person cut the ear, and the other used a soft pad to pick up the ear. The general requirement is to leave the fruit head length 17-19 cm. After the cut, it should be lightly placed and lightly mounted on a cushion. No mechanical injury or bruising occurs.