From autumn to early winter last year, the weather in the Youjiang River Valley and other mango producing areas in Guangxi Province was warm and dry with little rain and sufficient sunshine. The photosynthesis, nutrient accumulation and flower bud differentiation of mango autumn shoots were extremely favorable. It is expected that the flower buds of mango trees in our region will be widely differentiated this spring. Well, the amount of flowers is larger. In order to ensure the quality of mango blossoms and improve the fruit setting rate, it is recommended that the management of mangoes this spring should include the following technical measures: First, timely sparse flowering trees with an apical flowering rate of 80% or more should be cleared early to preserve about 70% of the total. Grades are inflorescences, and other inflorescences are removed from the base when they are 5-10 cm in length. For larger inflorescences, it is better to cut off one-third to one-half of the lateral pedicels in the base to reduce the amount of flowering. The effect of tree nutrient consumption on fruit set. Second, timely top-dressing on the amount of flowering mango trees in the late flower to Xiehua time to top dressing. Apply 0.15-0.25 kg of urea per plant, or 0.25-0.5 kg of compound fertilizer, or add 0.5% of urea, 0.2-0.3% of borax and 0.2-0.3% of potassium dihydrogen phosphate in combination with spraying. The vigor is weaker. Trees can be added at the same time 50-100 mg / liter gibberellin, etc. for foliar spray. Third, pest control 1, mango anthracnose flowering and young fruit spray every 7-10 days. The main drugs are: 1:1: 100 Bordeaux mixture, 30% copper oxychloride, 12% green copper, 50% carbendazim, 70% thiophanate-methyl 800-1000 times, 75% chlorothalonil or 80 % Anthraquinone Fujian 500-600 times, 65% on behalf of Zinc or 40% Wei Wei Wei 400 times, Shi Baoke 500-1000 times. 2. Mango powdery mildew sprayed once before the flower buds germinating, once Bacillus thimble agent of 0.3 Baume degree or spraying powdery mildew at flowering fruit stage. The medicine used is: 50% sulfur rubber suspension 200-400 times liquid , 40% extermination Wei Wei 400-600 times liquid, 20% powder rust 1500 times, 50% carbendazim 500 times, 700 thiophanate-methyl 1000 times. 3. Mangosaurus horizontal stripes tailworm (also known as borers or cockroaches) spraying control during inflorescence germination, spray once every 7-10 days, continuous 2-3 times. The main agents are: 90% trichlorfon 500-800 times, 80% dichlorvos 800 times, 255% enemy killed 3000-4000 times, 40% Le Siben 1500 times, 50% efficient eradication of 2000 Double fluid. 4, mango citronella leaf pods need to pay close attention to insects during the flowering period, once found that spraying control. The main insecticides used were: 20% Yefensan 1000 times, 10% Seperoe, 20% extinction, 25% enemies, and 255% kung fu 2000 times. Spray once every 7-10 days for 2-3 consecutive times.
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