Tengfei Hardware tells you how to prevent the cold in late spring?

The cold wave in late spring does great harm to tea plants, causing a large amount of nutrient consumption of tea plants, seriously reducing the yield and quality of the next year, and causing a serious decline in economic benefits of growers. Therefore, it is necessary to take preventive measures against the late spring cold wave of tea trees. How does tea tree prevent cold wave in late spring? Follow the shovel manufacturer to find out.

1. Select cold resistant varieties

In garden construction, varieties with strong cold resistance should be selected, and early growth should not be blindly pursued. Early maturing varieties, especially the proportion of early maturing varieties, should be appropriate. It is suggested that early growing varieties should be the dominant varieties, accounting for about 70% of the total garden area, and the proportion of early growing varieties should be controlled within 30%. Clonal seedlings should be cultivated according to local conditions. After long-term adaptive cultivation, it has strong mountain adaptability and cold resistance.

2. Pay attention to cold wave forecast

It is necessary to strengthen the lighting of disastrous weather forecast, timely understand the cold wave information, and do a good job of prevention in advance. After the release of the cold wave forecast, human resources should be concentrated to pick the buds and leaves of the budding tea garden to minimize the losses caused by frost disasters.

3. Soil and fertilizer management

Cultivate according to the growth law of tea trees. Sandy soil and sandy loam can be used for shallow cultivation, while loess and yellow brown soil can be used for deep cultivation. The land near the root should be shallow cultivated to avoid damaging the root, while the land far away from the root should be deep cultivated. The base fertilizer is mainly farmyard manure, with appropriate combination of phosphate fertilizer and potassium fertilizer. In addition, before the arrival of frost, it is generally necessary to spray trees to kill bacteria and prevent them from freezing.

4. Cover antifreeze

Straw can be used to cover between rows of tea trees, and do not expose them to the ground. For the windward tea garden that is easy to freeze, you can cover the crown of the tea tree with straw or straw, and carry water after the cold wave. In addition, when the cold wave comes, according to the wind direction, terrain and area, when the temperature drops below 3 degrees, the fire will produce smoke, which can prevent heat diffusion and also improve the temperature of the tea garden. The snow on the tree crown shall be removed in time to avoid crushing the tea tree due to too thick snow or frostbite of new buds.