Help me see what disease my lychee tree has? 50

Lychee leaf tip is dry, note that here the leaf tip is dry, not the leaf is dry, this is different, the leaf tip accounts for a small part of the whole leaf. Like the following**. There are two reasons to consider here, one is fertilizer damage or pesticide damage, and the other is to consider lychee leaf blight.

1. Caused by fertilizer damage or pesticide damage.

Why? This is because considering the characteristics of lychee leaves, lychee leaves are thin leathery or leathery, lanceolate or ovate-lanceolate, due to the high concentration when spraying foliar fertilizer or high concentration when spraying pesticides, the characteristics of leathery, the liquid stays in the leaves for a short time, but stays in the leaf tips for a long time. The high concentration of absorbed nutrients and liquid medicine causes the leaf tip tissue to lose water, thus causing the leaf tip to die.

Solution: 1. When choosing to spray trium amino acid foliar fertilizer or pesticide in the period of low temperature, the concentration can be appropriately higher when the temperature is lower, and the concentration is appropriately lower in summer and autumn. 2. Spraying must be even, first spray from the bottom to the top, and then spray from the top to the bottom.

Prevent the accumulation of fertilizer or liquid medicine on the lower leaves.

2. Leaf blight causes leaf tip dryness.

1. Symptoms of litchi leaf blight.

Lychee leaf blight harms the leaves of lychee trees, at the beginning on the leaf tip, the infected part is brown, and slowly turns gray-brown to gray-white, the boundary between the lesion site and the non-infected part is clear and clear, and dense black small spots appear on the disease spot in the later stage.

2. The cause of litchi leaf blight.

Lychee leaf blight generally occurs more in summer and autumn, that is to say, after dog days, the orchard is aggravated in the environment of high temperature and humidity or in the autumn rain for more than ten consecutive days. The disease of the fruiting trees begins in July, and the peak of disease occurs from August to September, and the temperature decreases in October, and the lesion process slows down. Due to the high density and poor ventilation and light transmission of seedlings, the seedlings entered the high incidence period of leaf blight in June.

3. Lychee leaf blight solution.

After picking the fruit, remove the dead branches and leaves of the orchard in time, and apply autumn fertilizer in time to enhance the tree potential, which can reduce the occurrence of diseased leaf blight. At the beginning of leaf blight, 25% diphoxyl was sprayed. 700 times of cyclohexizin emulsifiable concentrate, or 1000 times of 50% sterilization king (chlorobromoisocyanuric acid) water-soluble powder.

The above are the causes and solutions for the drying up of lychee leaf tips, only the first leaf is vigorous, in order to better carry out photosynthesis, for flower bud differentiation, produce strong flower buds, the quality of lychee will be better, and the taste will be sweeter.

Too much fertilizer. Overwatering.

After eating a large amount of fresh lychee, some people experience symptoms such as dizziness, sweating, paleness, fatigue, palpitation, thirst, hunger, etc., and in severe cases, symptoms such as cold extremities, thin pulse, decreased blood pressure, and even convulsions and sudden coma. This is due to the hypoglycemic reaction caused by excessive insulin secretion by the body after eating a large amount of fresh lychee.

Lychee contains a certain amount of hypoglycgon A, a toxin that inhibits certain metabolic enzymes when it enters the human body, affecting the conversion of other energy substances into sugar, and even affecting the oxidation of fatty acids. When glycogen in the human body is depleted, the brain will develop hypoglycemic encephalopathy due to lack of energy substances.

Categories: Healthcare.

Problem description: Brothers and sisters, what diseases can lychee cure, and what medical value does it have?

Please help, thank you.

Analysis: Also known as Lizhi, Danli, and Volcanic Li. Medicinal parts, seeds (lychee cores), fruits, roots, leaves, peels.

Indications, seeds: dissipate qi and knots, dispel cold and relieve pain. Fruit:

It invigorates the blood, regulates the qi, and relieves pain. It is used for polydipsia, hiccups, stomach pain, scrofula, boils, toothache, traumatic bleeding. Root:

Reduces swelling and relieves pain. It is used for stomach coldness and pain, hernia, spermatozoa, and throat paralysis. Ye:

For ulcers behind the ear. Peel: used for dysentery, blood collapse, eczema.

Modern research] seeds: containing L-methylenecyclopropyl-glycine and colorless cyanidin. Fruit:

Contains glucose, sucrose, protein, fat, vitamin C, A, B, folic acid, citric acid, malic acid and other organic acids and a large amount of free arginine and tryptophan. The aqueous solution made of lychee kernel dry extract has a significant hypoglycemic effect on rat alloxan diabetes mellitus.

Family] is the fruit of lychee, a plant of the family Wuhuizi.

Aliases] detachment, lychee, danli, volcanic li.

Sexual taste is attributed to the meridians] warm and sweet and sour in taste; into the spleen, stomach, and liver meridians.

Indications] Nourish the spleen and liver, quench thirst, nourish the heart and blood, regulate qi and relieve pain, reduce adversity and stop uh. It is mainly used for the treatment of spleen deficiency and diarrhea, polydipsia, hiccups, stomach cold and pain, cancer, swelling, toothache, leakage anemia, traumatic bleeding and other diseases.

Nutrients] per 100 grams contains moisture grams, protein grams, fat grams, carbohydrates 15 grams, calories 64 kcal, crude fiber grams, ash grams, calcium 4 mg, phosphorus 32 mg, iron milligrams, carotene trace amounts, thiamine milligrams, riboflavin milligrams, niacin milligrams, ascorbic acid 15 milligrams, potassium 193 milligrams, sodium milligrams, magnesium milligrams.

Therapeutic effect] 1 Replenish energy, nourish the brain Lychee pulp contains glucose 66 and sucrose 5, and the total sugar content is more than 70, ranking first among many fruits, with the effect of replenishing energy and increasing nutrition. Studies have proved that lychee has a nourishing effect on brain tissue, and can significantly improve insomnia, forgetfulness, fatigue and other symptoms.

2 Enhance immune function Lychee meat is rich in vitamin C and protein, which helps to enhance the body's immune function and improve disease resistance. Since ancient times, it has been regarded as a precious tonic.

3 Lowers blood sugar Lychee contains LA methylenecyclopropylglycine, which is a substance with hypoglycemic effect and is very suitable for diabetics.

4 Swelling and detoxification, hemostasis and pain relief In addition to the well-known tonic effect, lychee can also be used for surgical diseases, such as tumors, ulcers, sores and swellings, traumatic bleeding and other diseases.

5 Stop hiccups, stop diarrhea Lychee is sweet and warm, strengthens the spleen, and can reduce inversion, which is a good dietary therapy for people with stubborn hiccups and diarrhea.