How to prevent the annual results of longan size

Longan is often cultivated in warm areas such as Fujian. Will there be all kinds of problems in planting longan? these problems affect growth and yield. Today is mainly about the longan size of the year results should do? How to maintain the balance and stability of output. A brief introduction for your reference.

I. the cause of occurrence

1. There are many varieties of longan, some are varieties with strong ability to protect flowers and fruits, while others are easy to drop flowers and fruits, so you can choose better varieties when you choose.

two。 Results the mother branch was damaged by moth in autumn shoot and young leaf stage, and its growth was poor, so that it could not bloom and bear fruit well. Or a large amount of downy mildew in florescence and less fruit. The drought in autumn shoots and fruit period affects the germination of buds and shoots, and the fruit falls. When it rains during the flowering period, there will be a large number of fallen flowers and can not be pollinated and fertilized. A warm winter can make flower buds unable to differentiate.

3. Blindly in the year of multi-flowering in the pursuit of multi-fruit, not thinning flowers and fruits, excessive consumption of nutrition, and no supplementary nutrition in place. Make the growth imbalance, do not sprout new buds, do not shoot. Extensive management, regardless of asking.

II. Avoidance measures

1. After each winter harvest, you should cooperate with ploughing to use enough farm manure to keep the soil fertile, well-structured, and stand alone for weak trees. Do a good job of digging ditches in the fields and do a good job of drainage and irrigation against waterlogging and drought. During the growth period, downy mildew and pedicel borer are mainly prevented, diseased branches are cut off, and highly effective pesticides with less harm are used to control diseases and insect pests.

two。 The crown is too large, more than 5 meters, nutrition transport is too far, do not move, it is best to cut the crown to maintain at about three meters, nutrition transport in time. In the prime of growth, be sure to remove some inflorescences, and excess fruit, sick fruit weak fruit. Prevention and control of consumption will not produce good fruit on the contrary. In the small year fruit, we should pay attention to remove some buds to avoid sprouting, concentrate nutrients. The flowering stage can be pollinated artificially to increase the fruit setting rate. In addition, apply fertilizer a few more times, and pay attention to maintaining all the nutrients needed during the flowering and fruiting period. Spraying zinc sulfate as foliar fertilizer to balance the relationship between vegetative growth and reproductive growth.

Grasp the phenomenon of longan's annual results, and then compare the reasons to implement good preventive measures. However, there are many reasons that affect the occurrence of the year, so you can find out the causes and implement your own preventive measures in the light of reality.