Control of Ligustrum lucidum
The damage of Ligustrum lucidum in Beihengshui once occurred, which caused the death of a large area of Ligustrum lucidum at that time. Good results have been achieved through research and control in recent years.
PseudococcasConstock, also known as mulberry pink scale. Its eggs are generally laid between petioles and branches, oval, light orange, dozens of eggs concentrated into blocks, forming white floc oocysts. Three generations a year. The first generation nymphs flourished in mid-late May, the second generation in mid-late July, and the third generation from late August to early September.
It is mainly harmed by female worms and nymphs, which mostly attach to the connection between leaves or branches and petioles and absorb the sap of the plant. the lightly damaged parts form black spots or black spots, and the serious ones cause the whole plant to atrophy and die.
Prevention and control methods: 1. Strengthen quarantine: strictly implement the quarantine system and do not introduce insect-carrying seedlings. Do not take scions or cuttings from worm-carrying seedlings.
two。 Scientific management: try not to be strongly pruned during the growing period. For neatness and consistency, pruning must be carried out. After pruning, you need to spray protective pesticides such as 1500 times mancozeb or 1000 times carbendazim every 5 to 7 days, 3 to 4 times continuously. At ordinary times, it is necessary to strengthen management, pay attention to ventilation, rational fertilization, scientific watering, enhance tree potential and disease resistance.
3. Timely observation: often check the insect situation, check whether there are white flocs, early detection, timely prevention and control.
4. Chemical control: the effect of chemical control is good in the peak egg hatching period or the first instar nymph stage, the scale is commonly used to kill 1000 times of liquid, 1000 to 1500 times of rapid culling solution is sprayed every 5 to 7 days, continuous use of 2 to 3 times, all of them can be eradicated. When spraying, pay attention to spraying the whole plant (including diseased plants and healthy plants), and evenly apply medicine on both sides of the leaves; when the number of damaged plants is small, wet cotton balls soaked in rice vinegar or alcohol can be used to wipe the harmful places repeatedly, which can kill the nymphs completely, and the effect is very good.
5. Protect natural enemies: pay attention to protect and utilize the natural enemies of shell insects, such as parasitoids, ladybugs, lacewings and so on.
6. Eliminate adults: combined with winter pruning to eliminate adults to avoid the occurrence of a large number of nymphs in the coming spring.
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How to solve the rotten roots of Ligustrum lucidum?
How to solve the rotten roots of Ligustrum lucidum? The rotten roots of Ligustrum lucidum are generally caused by the following reasons: 1. Too much watering and too much water content in the soil make the roots unable to breathe and die. two。 Excessive fertilization or insufficient fermentation of organic manure will continue to ferment in the soil and generate heat, resulting in root injury and death. 3. There are pests or diseases underground. 4. There are some toxic substances such as industrial waste residue in the underground soil, which cause the root system to rot. First of all, find out the cause of root death, pull out the dead plants and have needles.
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The value and use of Golden Leaf Privet
Used in landscaping, the leaves of Ligustrum lucidum are golden yellow and beautiful throughout the growing season, so they can be planted in groups with plants such as golden leaf poplar, red leaf Berberis, purple leaf dwarf cherry, cypress, Fufang vine, Shu juniper seedlings and so on. In the "street green decoration" or around the sculpture, planted pieces of golden leaf privet, its eye-catching color, play the role of icing on the cake, not only enrich the landscape color, but also activate the garden atmosphere.
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