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Rare Large Stand of Endangered Natural Yew Trees Discovered in Zhashui, Shaanxi
A rare large stand of natural yew trees, numbering more than 100,000, has recently been discovered in Zhashui County, Shaanxi, which is located in the Qinling Mountains. Some experts say that the yew is an endangered tree species preserved from the Quaternary glacial period, and that the extensive area and large number of this natural yew forest are rare. It is understood that Zhashui is located on the southern slope of the Qinling Mountains, in the transitional zone between the subtropical and warm temperate zones, with abundant rainfall and a forest coverage rate of 78 percent. It is rich in plant resources and has been known since ancient times as a "natural medicine storehouse." In Dongyuan Gully, Fenghuang Town, a yew was once found with a trunk circumference of 2.18 m, a canopy covering half a mu of land, and an age of more than 1,900 years.
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Introduction to the Variety Characteristics and Cultivation Techniques of Laiwu Large Ginger
Laiwu Large Ginger Laiwu ginger, also known as yellow ginger or large ginger, is a famous product of Shandong. The producing area is mainly concentrated on both banks of the Wen River and Hui River in western Laiwu. It has long been renowned at home and abroad for such excellent characteristics as large rhizomes, thin skin, bright color, few fibers, fine flesh, strong pungency, delicious taste, rich nutrition and good storability. Ginger has a wide range of uses. It can not only be used for seasoning, pickling and candying, but can also be processed into ginger juice, brewed into ginger wine, and used to extract ginger oil. It is also an important raw material for incense making and a medicinal material. Therefore, the ancients once praised it as "tea for dispelling dampness" and "the gentleman among vegetables." In the Compendium of Materia Medica there is
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What kind of tree species is the tetraploid large-leaf black locust?
The tetraploid large-leaf black locust is a superior variety selected through years of dedicated research and experimental comparison from among several excellent polyploid black locust clones introduced from abroad. The tetraploid large-leaf black locust is an artificially induced tetraploid plant, characterized by fast growth, large leaves and high biomass. Its leaf width is more than 2 times that of the common black locust, and its compound leaf dry weight, single leaf dry weight and total leaf dry weight are 1.5 times or more those of the common black locust respectively. Compared with the common black locust, the tetraploid large-leaf black locust has a denser crown, thicker branches and a stronger photosynthetic capacity. Tetraploid
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Key Technical Points for Large-Scale Cultivation of Licorice with High Quality and High Yield
Field Management 1. Intertillage and weeding: After the seedlings emerge completely, intertillage and weeding should be carried out promptly so that there are no weeds in the field. For ridge planting, three hoeings and three ridgings can be done; for bed planting, weeds on the bed surface should be pulled out. This is the key to high quality and high yield. Where conditions permit, closed weeding can be carried out after sowing and before seedling emergence, using Douhuanglong (20% chlorimuron-ethyl) wettable powder 2 bags/mu mixed with acetochlor 2-4 bottles/mu and sprayed over the field. After seedling emergence, herbicides killing monocotyledonous plants can be sprayed to eliminate weeds.
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What are the control methods for anthracnose in large-leaf boxwood (Euonymus japonicus)?
Methods for controlling anthracnose in large-leaf boxwood: 1. In autumn and winter, collect diseased branches and fallen leaves and burn them in a centralized manner to reduce the source of the disease. 2. At the early stage of the disease, promptly apply 75% chlorothalonil wettable powder at 500 times dilution, or 50% thiram wettable powder at 500 times dilution, or a 1:1:160 Bordeaux mixture, or 50% Tuzet wettable powder at 800 times dilution.
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Detailed Explanation of Key Points for High-Yield Cultivation Techniques of Large Ginger
1. Sowing at the appropriate time. Sow when the ground temperature reaches above 16°C. Generally, for plastic film mulching cultivation combined with direct-sowing agent, sowing is done around Qingming; in the Weifang area, manual sprouting of large ginger is generally done in mid-April, after Qingming and before Guyu. 2. Land preparation and fertilization. Before plowing, apply 4-7 cubic meters of high-quality farmyard manure per 667 sq m, irrigate heavily, deep plow 30cm, then broadcast 50kg of double-effect medium and trace elements per 667 sq m, combined with 100kg of large ginger special fertilizer NPK organic fertilizer (containing 30% organic matter, 20% ammonium humate), and prepare furrows after broadcasting
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High-Quality, High-Yield Cultivation Techniques for Large Ginger 'Fuyu No. 1'
"Fuyu No. 1" large ginger is a new ginger variety successfully bred in recent years by the Laiwu City Institute of Agricultural Sciences. It was derived from Laiwu large ginger using a method combining conventional mutation breeding and biotechnology: after radiation treatment with a CO60 radioactive source to induce variation, tissue-culture rapid propagation techniques were used to accelerate its reproduction. Target individual plants were selected from the radiation-treated Laiwu large ginger planting field for planting and re-selection. After 5 years of continuous screening trials, a new ginger variety with excellent and stable traits was successfully bred and named "Fuyu
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Introduction to the Large Mao Hua Variety, a Superior Cultivar of Honeysuckle
The scientific name of honeysuckle is Lonicera japonica, a semi-evergreen perennial twining shrub of the vine type. It is a commonly used traditional Chinese medicinal herb and is praised as a natural broad-spectrum antibiotic. In recent years, with the expansion of the application fields of honeysuckle, its cultivation has shifted from extensive management to intensive management, and from one flower crop per year to four flower crops per year, greatly increasing yields and significantly improving cultivation benefits. At present, many places are introducing or expanding planting, but if attention is not paid to variety selection, the results will be contrary to expectations. Among traditional Chinese medicinal herbs, honeysuckle is divided into Mi Yin Hua, Dong Yin Hua and Shan Yin Hua. Mi Yin Hua is mainly produced in Xinmi, Henan,
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Extreme potassium deficiency in cotton fields can cause large numbers of plants to die
Cotton is a crop sensitive to potassium deficiency, especially since the development of BT transgenic insect-resistant cotton, potassium-deficient cotton fields often show severe disease, premature aging, few and small bolls, poor boll opening and deteriorated fiber quality. Four or five years ago, rapid soil nutrient tests on cotton fields in central and southern Hebei showed that most soils had available potassium content below 80PPM (mg/kg), which is severe potassium deficiency, and some soils were below 40PPM, reaching the level of extreme potassium deficiency. The data measured by soil nutrient rapid testers is not precise; some soil samples measured available potassium content of 0
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What are the treatment methods for several diseases of large yellow croaker?
I. White spot disease (cryptocaryoniasis) 1. Pathogen: Cryptocaryon irritans, also known as "marine fish ichthyophthirius," belongs to the ciliate class of the phylum Ciliophora. The body is oval or spherical, with uniform cilia over its entire surface. 2. Symptoms: The parasite mainly infests the body surface, gills and fin rays of the large yellow croaker. In the early stage of the disease, white spots are visible to the naked eye on the caudal and pectoral fins of the diseased fish, and as the disease progresses they gradually spread to the body surface and gills, with the increasing white spots forming a film, commonly known as "white spot disease." The diseased fish are restless, either swimming in circles along the pond walls, or
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