What are the benefits of growing vegetables in greenhouses?

Growing vegetables in greenhouses, on the one hand, is the principle of greenhouses just like the greenhouse effect. First of all, after the light shines into the greenhouse, the temperature in the greenhouse will rise, but the heat dissipation in the greenhouse is slow and the humidity in the greenhouse is high, so it plays a role in heat preservation. In winter, the temperature inside the greenhouse is higher than that outside, and plants can grow all the time. At the same time, high temperature will accelerate the growth of plants. Secondly, the inside of the greenhouse is sealed, so other pests can't get in, which can reduce the use of pesticides. Finally, greenhouses can reduce the damage of wind and rain to plants.