The main reasons for the rotten flowers of zucchini
The main causes of zucchini rotten flowers are: Botrytis cinerea and physiological disorders (temperature drop, high humidity, hindered root development, etc.). In addition, bacteria can also infect the flowers, and in serious cases, white pus will flow out. At the beginning, the symptoms were as follows: the flowers showed wet rot in the form of water stains, and gray-black hairs appeared in the later stage. Some wet rotten flowers show pus (grayish white or yellowish brown) and have a bad smell. In the specific prevention and control, should be treated differently, but in the current zucchini cultivation and management process, we should pay attention to the above causes of comprehensive consideration. To control Botrytis cinerea mainly, mixed with bacterial agents, and pay attention to the supplement of elements such as boron and calcium. In cultivation and management, pay attention to heat preservation, humidity reduction, enhance root activity; pay attention to foliar spraying of Fengshou No. 1, Jiaofeng, Lvfeng 95 and cytokinin in overcast and snowy weather to enhance plant resistance; appropriate application of phosphorus and potassium fertilizer.
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Zucchini is easy to bend in the wrong way.
Unlike cucumbers and tomatoes, zucchini does not take the form of dipping or pointing flowers, it takes the form of symmetrically smearing hormone drugs on both sides of the melon body to promote sitting melon. But Zhang Guangming did not pay attention to symmetrically wiping melon on both sides of zucchini body with medicine, just to promote melon sitting, he casually smeared hormones on one side of the melon body, though.
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Three measures to control the prosperity of zucchini
Soak the seeds in 10% trisodium phosphate solution for 20 minutes, or soak the seeds in 55 ℃ warm water for 30 minutes. Second, in the early stage of the disease, 1.5% Zhixianling emulsion can be used 1000 times, or 20% virus A wettable powder 500x, or NS-83 enhancer 100x, or 0.5% antiviral 1 250g 300x, 1000 times potassium permanganate solution.
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