First, top-dressing technology May is the high-yield period of eggplant, and there is a great demand for fertilizer and water. Eggplant is hi, please pay attention to keep enough of the soil moisture in May. Water and furrow irrigation can be performed when water is scarce. When watering, the fertilizers such as ammonia, monoammonium phosphate, and potassium sulfate were dissolved in water at concentrations of about 0.3%, about 0.15%, and about 0.2%, respectively. When furrowing, fill a ditch with large water and then evenly spread the above fertilizer in the ditch. The amount per mu can be 15-30 kg, 10 kg and 10 kg respectively. If there is no shortage of water, you can dig a nest in the middle of every four eggplants and put enough ripe manure in the nest. Note that after top dressing, ventilation should be increased to prevent the occurrence of fertilizers and diseases. Second, late management picks the old leaves: In addition to removing the axillary buds, the eggplant should also be removed from the old leaves. The site is reserved for one or two leaves underneath the (largest) aubergine at the bottom of the plant, and the rest below should be removed. Deep trenching: Raising the surface of the car by digging trenches can prevent flooding, increase soil permeability, and reduce soil temperature. Third, eggplant diseases and insect pests to May, the main incidence of eggplant gray / cotton blight, powdery mildew. Gray / Blight: A brownish-brown lesion appears on mature fruit of the ash blight with slight depressions. When the disease is aggravated, the whole fruit is dark brown. If the humidity increases, a layer of grayish white frosty mold will appear on the fruit surface, which gradually softens and rots, giving off a bad odor. In some cases, the disease may develop during transportation and at the stalls in the shops; M. blight is most conducive to the growth and development of pathogens under high temperature and high humidity, and of course it is also most beneficial to the infection. Therefore, in the summer when the temperature is high and rainy, you can see a lot of eggplant rot and quickly grow long and dense white hair, a large number of mature eggplant fruit, were infected by M. dysentery, the formation of rotten eggplant. Control methods: Central disease strains appear at the initial onset, and they should be immediately removed, destroyed and sprayed. From the beginning of the rainy season, a 1:1:200-fold Bordeaux mixture is sprayed every 7 days for protection. The effect is very good. Once the disease has occurred, it must be applied immediately. There are 75% chlorothalonil 500-600 times night, 50% thiophanate-methyl WP 800 times, 40% EB aluminum WP 200 times, 64% antivirus 500 times, etc. Spray once every 7-10 days, even spray 3-4 times, in order to prevent the formation of drug resistance each drug should use different types of drugs.
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