In the hot summer, the cultivation of vegetables in the open field is more serious due to the high temperature. If it is necessary to protect the benefits, it is necessary to take necessary protective measures.

1. Small block of vegetable land can be used to build a pergola to cool down. Topping branches, or grass felts, etc.

2 , build a temporary small arch shed, covered with shade nets. When it comes to cabbage, celery, broccoli and cabbage in summer and autumn, it is a hot day, and it must be shaded. The vegetable farmer builds a temporary small arch shed, which is covered with a sunshade net, which can not only reduce the temperature, but also protect the glare.

3. The ground is covered with thin grass felt or hay. After sowing water after sowing, the seedbed can be covered with thin grass felt, hay, etc., to cool and moisturize, and to increase the emergence rate. When 60% of the seedlings are unearthed, the cover can be removed, and the seedlings can be gradually lengthened to prevent the seedlings from being exposed to the sun.

4 , increase the number of leaves of vegetable plants to shade. When the tomato is topped in the summer season, two layers of leaves should be kept on top of the top layer. The upper side branch of the pepper vegetables, leaving 2 leaves and then heading, is also for the purpose of shading and cooling. There is also an open-air summer watermelon in the midsummer season. The vegetable growers generally use the leafy melon to cover the body, which can also play the role of shading and cooling.

5 , irrigation and cooling. After the summer vegetable field is filled with water, it is best to cover the wheat straw or wheat bran on the surface, or cover a thin layer of dry soil to reduce water evaporation and lower the ground temperature. In addition, the watering time should be carried out in the morning or evening. In case of heavy rain, we must pay attention to the timely elimination of water in the field. After the rain, we should use the well water to water the vegetable field in time to reduce the ground temperature. The sprinkler irrigation method can also reduce the ground temperature and appropriately increase the air humidity.