Techniques of Orange Leaf Protection in Winter

After entering the dormant period of citrus in winter, most of the nutrients of the tree are stored in the leaves, so reasonable leaf protection in winter is not only beneficial to enhance the cold resistance of the tree, promote flower bud differentiation, but also conducive to germination and flowering and fruiting in the following year. So how to protect the leaves of oranges in winter? Come and have a look with the editor.

1. Spraying to protect leaves

Focus on the control of red spider, red spider is one of the main pests of citrus, it has no obvious diapause period, in the case of low temperature in winter, red spider is still serious, which is one of the main reasons for abnormal defoliation of citrus. When it is found that the number of red spiders in each leaf is more than one, you can spray drugs such as propargite or promethazine.

2. Fertilizing and spraying growth regulators

There is a nutrient deficit after citrus harvest, if there is no timely fertilization, then some orchards will have the phenomenon of old leaves curling and withering, so it is felt that fertilization after fruit picking can keep the leaves dark green and the tree can recover quickly. It can also be sprayed with multiple frustration, which can enhance the synthesis of chlorophyll in leaves, improve leaf photosynthesis and prevent leaf premature senescence.

3. Pruning

Increasing pruning can obviously improve light conditions and promote leaf photosynthesis. In pruning, ammonia should be left empty and densified, strong and weak should be pruned, dense branches, crossed branches and overlapping branches should be thinned in time, and overgrown branches, drooping branches and branches with serious diseases and insect pests should be cut off at the same time.

4. Drought resistance, waterlogging prevention and frost prevention

Drought and lack of water can easily lead to root drying, weakening of nutrient and water absorption capacity, enhanced transpiration of leaves, causing defoliation, so timely watering to fight drought after winter, furrow irrigation or hole irrigation can be adopted, combined with leaf spraying, in case of overcast and rainy days, it should be drained in time after rain. In addition, after fruit picking, combined with deep turning of the soil, apply a heavy fertilizer, cultivate the soil after fertilization, in order to increase the soil temperature, in the early stage of Frosts Descent, the trunk was coated with white or wrapped grass to facilitate overwintering.

The above is the introduction of citrus leaf protection techniques in winter. I hope it can help you. If you want to know more about it, please follow us.