Overwintering zucchini should not be controlled by hormone.

In the greenhouse where we went to the countryside to investigate the cultivation of overwintering zucchini, we saw that because the temperature in the shed was still high during the day, many vegetable farmers were still using hormones to control the vigorous growth of zucchini, resulting in slow growth of zucchini, and some even appeared hormone poisoning. Because it has entered winter, the temperature difference between day and night in the shed is large, vegetable farmers can not use hormones, but through temperature control can effectively control the growth of zucchini. Grass curtains have been installed on the current greenhouse, and after all the grass curtains are put down at night, the lowest temperature in the shed is 16 ℃, which leads to the vigorous growth of zucchini. In this way, vegetable farmers can not put all the grass curtains down, but use the grass curtains on 2/3 of the greenhouse or the upper part of the front face to control the temperature, and they can also put the grass curtains down, but the upper and lower vents in the shed should be properly opened, and the night temperature in the shed should be controlled at about 12 ℃, so as to reduce the consumption of nutrients. In the daytime, if the temperature in the shed is higher than 22 ℃, it should be ventilated and cooled down, up to a maximum of 25 ℃. This can not only inhibit the vegetative growth of zucchini, but also promote its reproductive growth, so as to effectively control the growth of zucchini. For zucchini which have begun to bear melons, vegetable farmers can control the daytime temperature in the greenhouse at 20 ℃ ~ 22 ℃ and the night temperature at about 15 ℃ to promote fruit development.