Solar terms and agricultural production: a guide to agriculture in early spring

As the saying goes, "A year's plan lies in spring". As the first of the 24 solar terms, beginning of spring is the time for farmers to prepare for the new year. Although people are used to taking beginning of spring as beginning of spring, it may not get warmer immediately after beginning of spring, and crops may still be in a snowy climate, so it is necessary to do a good job of anti-freezing, anti-cold and snow prevention. Let's take a look at the beginning of spring Agricultural Guide.

Heat preservation and antifreeze

There are two reasons for cold injury and freezing injury in early spring: First, plants grow vigorously, and the cold resistance of plants is obviously reduced with the increase of water and fertilizer under artificial management. There is still a big cold current after beginning of spring, which causes freezing injury and chilling injury of solanaceous vegetables in greenhouse. To this end, we must continue to do a good job in cold and antifreeze.

Eggplant vegetables grow well and need to be covered with two layers of film in the greenhouse. Because melon is more susceptible to freezing than eggplant, straw bundles can be piled on the skirt film around the greenhouse to enhance the ability to resist the invasion of cold air around the greenhouse. Cucumber seedlings still in seedling stage can be covered with sunshade net, grass curtain or non-woven fabric on the small arch shed at night to enhance the heat preservation ability; In case of strong cold air, anti-freezing and heat preservation measures must be taken.

Keep good ventilation.

After beginning of spring, with the increase of sunshine time, the temperature rose and the humidity in the shed increased. In order to reduce the occurrence of pests and diseases and meet the requirements of the growth and development of melons and vegetables on environmental conditions, it is necessary to do a good job in the temperature and humidity management in the shed, and do a good job in opening the door, uncovering the film, ventilating, closing the door and covering the film for heat preservation according to the weather change and plant growth.

Do a good job in flower and fruit protection

Low temperature will affect the fertilization results of many melon and vegetable varieties, and it is easy to drop flowers and fruits. At present, in production, the methods to improve the fruit setting rate are as follows: first, apply plant growth regulators in flowers or ovaries, and use them according to the instructions to prevent excessive concentration and phytotoxicity. The second is artificial pollination.

Do a good job in pest control

With the increase of temperature and humidity in greenhouse, melons and vegetables in greenhouse are prone to gray mold, Fusarium wilt, Fusarium wilt and aphid damage. Pest control should be combined with agricultural control and chemical control, such as managing the temperature and humidity in the shed, reducing the humidity in the shed, spreading grass in the ditch, using water rationally, pruning in time, removing sick old leaves and spraying corresponding pesticides.