Main points of planting management of greenhouse eggplant in May

First, topdressing

May is a high-yield period of eggplant, and the demand for fertilizer and water is large. Eggplants like water, pay attention to keep the soil moisture enough in May. Watering and furrow irrigation can be done when water is scarce. When watering, the fertilizer ammonia hydrogencarbonate, monoammonium phosphate, and potassium sulfate were dissolved in water at concentrations of 0.3%, 0.15%, and 0.2%, respectively. When the ditch is filled with a large water to fill a ditch, the above fertilizer is evenly sprinkled in the ditch and melted, and the amount per acre can be 15-30 kg, 10 kg and 10 kg, respectively. If there is no shortage of water, you can dig a nest between each of the four eggplants and put the fully decomposed farmyard manure into the nest. Note that ventilation should be increased after topdressing to prevent fat and disease.

Second, the later management of the old leaves: in addition to removing the axillary buds, the eggplant should also be removed from the lower leaves. One or two leaves are reserved underneath the (largest) eggplant at the bottom of the plant, and the rest below should be removed.

Deep trenching: Heightening the surface with trenched soil can prevent flooding, increase soil permeability, and lower soil temperature.

Third, eggplant pests and diseases after May, the main incidence of eggplant is gray / cotton blight, powdery mildew. Gray/cotton blight: A pale brown to brown lesion on the mature fruit of ash blight, with slight depression. When the disease is aggravated, the whole fruit is dark brown. If the humidity increases, the fruit surface will produce a gray-white frosty mildew layer, which will gradually soften and rot and give off a foul smell. Sometimes, it can occur on the road and in the stalls of the store; the plague is most beneficial to the growth and development of the bacteria under high temperature and high humidity, and of course it is most beneficial to its infection. Therefore, when the summer is hot and rainy, a large amount of eggplant can be seen to rot and grow long and dense white hair. The mature eggplant fruit is infested with the plague bacteria to form rotten eggplant.

Prevention and treatment methods: The initial disease occurs in the central disease strain, which should be immediately removed and destroyed and sprayed. From the beginning of the rainy season, spray 1:1:200 times Bordeaux mixture for protection every 7 days, the effect is very good. Once the disease has occurred, it must be administered immediately. The agent has 75% chlorothalonil 500-600 times night, 50% methyl thiophanate WP 800 times solution, 40% ethyl phosphorus aluminum wettable powder 200 times solution, 64% antivirus 矾 500 times solution, etc., generally every Spray once every 7-10 days, even spray 3-4 times, in order to prevent the formation of drug resistance, it is advisable to use different kinds of drugs every time.