Amphisarca Lists
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Longan winter cold-proof points
1. Cultivate healthy autumn shoots. Autumn shoot is the fruiting mother shoot of longan in the coming year, and also one of the main branches of longan overwintering. Whether autumn shoot is healthy or not affects its ability of overwintering and cold protection. Therefore, the last autumn shoots of longan are generally controlled in the middle and late October. It is better to apply nitrogen fertilizer and drench water before shooting.
2018-09-15 -
Management of litchi in spring is the key.
From September last year to January this year, the weather continued to be warm and dry, dry and less rainy, which promoted the nutrition accumulation and flower bud differentiation of litchi and longan. Due to different varieties of litchi, the tree condition was quite different. Corresponding measures should be taken to manage the specific conditions: (1) applying strong flower fertilizer: after the flower ear is formed.
2018-09-15 -
Litchi yield should be improved and management should be adjusted according to local conditions.
"due to the limitations of land and water resources, the current mode of production of litchi must be changed." Li Li of the National Agricultural Technology extension Center of the Ministry of Agriculture pointed out that the sound development of litchi industry can be promoted through the scientific use of fertilizers to improve unit yield and quality, and to support farmers' cooperatives and leading enterprises. How.
2018-09-15 -
Five measures for re-grasping litchi after harvest
In May and June, some early-maturing litchi varieties were quickly harvested, and it was time to enter the post-harvest management period. Litchi results consume a lot of nutrients, picking fruit injured branches also make the tree body suffered an "internal injury". Therefore, after picking fruit, we should manage it in time to make litchi get nutrition supplement early and lay the foundation for high yield next year. Otherwise the tree...
2018-09-15 -
Techniques of protecting Flowers and fruits in Litchi
Problem: at present, it is the season for litchi flowering, pollination and fruit setting. Many farmers report that it is very difficult to protect flowers and fruits due to the cold weather this year. Damao Town, Wanning City, has nearly 300 mu of litchi fruit protection problem, and more than 200 mu of litchi is too old to bear fruit. Fruit farmers are too anxious to eat and sleep. I hope litchi experts in our province can give technology.
2018-09-15 -
Management of Litchi in August and September
All the postharvest management work of litchi is centered on the purpose of cultivating healthy autumn shoots. As the fruiting mother shoot of litchi in the coming year, the shoot period and the stout degree (nutrient accumulation level) will directly affect the shoot control, flower promotion and flower formation. From the production survey situation, at present, the city's litchi trees have generally been smoked...
2018-09-15 -
Key points of Management of Litchi Longan fruiting trees
First, do a good job of postharvest management. 1. Timely harvest. When picking fruit, one fruit should be cut twice. First, cut the ear together with the base of the fruiting branch, or even the base of the branch below the fruiting branch, and then cut off the ear. The branches below the ear do not shrink much, depending on the growth of the mother branch, and the ones that grow well are shortened.
2018-09-15 -
Careful retting of litchi and longan in rainy days
At present, the main work is to prevent "sprouting", improve the quality of flower ears, pay attention to the occurrence of diseases and insect pests, and fertilize in time the weather of high temperature and high humidity in February, which causes "sprouting" in many litchi and longan orchards, which has a great influence on the quality of buds and flowers. early low temperature and rain have a great impact on the late development of flower buds and the prevention of "flushing".
2018-09-15 -
Dealing with Rain Water's continuous management methods of litchi and longan
Longan blossoms in continuous rainy weather, the anther does not crack, it is difficult to pollinate and fertilize, and the flowers bloom in piles, resulting in rotten flowers, no fruit or unsatisfactory results. Yuhualing technology here reminds fruit growers to pay attention to prevent retting. 1. Do a good job in flower thinning. The flower spike is short, the lateral flower ear is many, the flower bud is dense, need to carry on before flowering.
2018-09-15 -
Measures to control citrus rust wall lice
Pay attention to the inspection of citrus plants, when there is a rapidly expanding layer of yellowish gray on the leaves and fruit surface, and when there are individual black fruits on citrus plants, or with a 10-fold magnifying glass, it is found that there are 2 and 3 rust wall lice in each field of vision, it is necessary to prevent and cure them in time. You can choose MMel 45 Dasheng 600 times solution, or 25% triazotin 1.
2018-09-15 -
Key points of citrus cultivation in January
Citrus pests mainly include Panonychus citri (McGregor), Phylloptruta oleivora Ashmead, Eotetranychus Kankitus Ehara, etc. Citrus farmers need to spray pesticides 10~15 times a year to control citrus pests. The distribution of citrus production areas in China...
2018-09-15 -
Heat damage of Citrus and its Prevention Technology
Citrus is a tropical and subtropical evergreen fruit tree (except trifoliate orange). It is warm and humid, but it is also afraid of heat. If the abnormal high temperature weather of 30 ℃ or more occurs during the period from flowering to stable fruit of citrus, it will affect its normal flowering and fruiting, and the earlier the occurrence time, the greater the damage caused by high temperature. During this period, the abnormal falling flowers caused by the high temperature weather.
2018-09-15 -
Prevention and treatment of magnesium deficiency in Citrus
In recent years, due to the transfer of a large number of rural labor force to cities and towns, the amount of livestock raised by farmers is decreasing, and the source of organic fertilizer is significantly reduced. Coupled with the depressed fruit prices for many years, the amount of organic fertilizer used by fruit farmers in fruit production has been greatly reduced, or even not used. As a result, the phenomenon of element deficiency in orchards has been increasing in recent years. Especially the medium element magnesium.
2018-09-15 -
Introduction and control of citrus planthopper
Citrus planthopper [Diaphorinacitrikuwayama] belongs to Homoptera, Caryophyllaceae. It is an important pest in the tender shoot stage of citrus, which mainly harms citrus, as well as Rutaceae plants such as Jiuli incense and yellow bark. caused damage by sucking juice on young shoots, young leaves and new buds of adults and nymphs. The young shoots of the victims.
2018-09-15 -
Citrus fruits are rich in more than 30 nutrients.
At present, there are more than 30 kinds of human health substances in citrus fruits, including flavonoids, monoterpenes, coumarins, carotenoids, propanols, acridone, glycerol lipids and so on. Flavonoids there are three types of flavonoids in citrus fruits: ⅰ is represented by rutin.
2018-09-15 -
Control measures of Citrus foot Rot
Distribution and harmful symptoms: foot rot, also known as skirt rot, is a root and neck disease, which occurs in all citrus areas in China. It harms the citrus root neck and the main root cortex, and the diseased bark is brown with the smell of lees and often exudes gum. Under the dry condition, the disease part cracked and hardened, and the boundary between it and the healthy part was obvious. At the beginning, only the tree table is endangered.
2018-09-15 -
Symptom Identification and Prevention and Control techniques of Citrus Huanglong Disease
Citrus Huanglong disease is also known as "orange cancer". A bacterial disease caused by phloem, which is spread by grafted seedlings and an insect called citrus planthopper, does great harm to citrus. If allowed to spread, it will cause a fatal blow to the citrus industry. Great attention must be paid to it.
2018-09-15 -
Identification and Control of Citrus Huanglong Disease
1. The typical symptom of the diseased tree in the initial stage is the yellowing of leaves with 1-2 or more branches in the thick green crown. There are two types of symptoms in this yellowing branch, one is uniform yellowing of the whole leaf, and the other is a piece of yellow and green, which is called mottled type. The total of these two types of leaves.
2018-09-15 -
Management and cultivation techniques of citrus in late stage
Orange picked with new lipid membrane solution after soaking on orange storage period of green, green mold, anthracnose, stem rot, black rot, etc. have good control effect, at the same time can prevent water evaporation, prevent bacteria infection, frost insulation, does not affect the crop water absorption, ventilation and light transmission, protect crops from external diseases infection, prolong preservation...
2018-09-15 -
What is the index of citrus frost injury?
Citrus freezing injury is a major disaster of citrus production in China, especially in the middle and lower reaches of the Yangtze River and the north. The large fluctuation of citrus yield is often directly related to the low temperature freezing injury during overwintering. The meteorological index of citrus frost injury can be divided into-5 according to the degree of frost injury.
2018-09-15