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Analysis of Common Problems and Countermeasures in Nanguo Pear Production
I. Planting Density Issues In old Nanguo pear orchards, the spacing between trees is large, the number of trees per unit area is small, the tree canopy is tall, management is extremely inconvenient, production costs are high, early yields per unit area are low, and the trees take a long time to reach full bearing age. Based on current advanced management methods and techniques, rational close planting is advocated. Given that Nanguo pear trees exist both as standard-rootstock trees and as dwarfing interstock trees, we believe that the suitable planting density for standard-rootstock Nanguo pear trees is a tree spacing of 3-4 m and a row spacing of 4-5 m, with 33-35 trees planted per mu of orchard. With this tree and row spacing, through the comprehensive application of various pruning measures, the trees can enter the high-yield period earlier, and the canopy spread can be controlled at 3-4 m. If water and fertilizer conditions are good and the canopy cannot be controlled, in the later stage the method of removing every other tree and removing every other row can be adopted to gradually increase the tree and row spacing. However, when establishing the orchard, permanent trees and temporary trees must be designated. Permanent trees should use a large-canopy tree form, while temporary trees should use a small-canopy tree form that bears fruit early. As the canopy of the permanent trees continuously expands, the canopy of the temporary trees should be gradually reduced to ensure the tree form and yield of the permanent trees. For dwarfing interstock Nanguo pear trees, the suitable planting density is generally a tree spacing of 1.5-2 m and a row spacing of 3 m, with a planting density of 111-148 trees per mu. On mountainous land with high elevation and steep slopes, the soil layer is often thin, management is inconvenient, and the canopy does not grow large, so under the condition of not affecting orchard operations, the planting density can be appropriately denser. On flat land with fertile soil, the canopy generally grows tall, so the planting density can be appropriately sparser.
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What problems exist in deer disease prevention and control in our country?
For half a century, with the development of the deer farming industry, the number of farmed deer has grown increasingly large, deer have come into broader contact with the external environment, and the variety of deer diseases has continued to increase. At some deer farms, the mortality rate has reached over 10% (including deer that should have been culled but were not). Deer diseases have become one of the important risks in deer farming production. 1 Historical review. Understanding of deer diseases has advanced and improved along with the development of deer farming production. Our country has a history of deer farming spanning several thousand years, but it truly flourished after the founding of New China. In the early days after the founding of the People's Republic, few deer were farmed and deer diseases were also few
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What problems exist in disease prevention for urban dog keeping?
Abstract: Currently, pets are developing rapidly in both urban and rural areas of China, especially the keeping of pet dogs in cities. In order to avoid and reduce the spread of canine diseases and zoonoses, this paper proposes standardizing the pet market, improving medical standards, and raising awareness and adopting countermeasures for rabies, canine distemper, and dog-human shared parasitic diseases. Urban residents mostly treat dogs as pets, and even when a dog dies, they cannot bear to eat it or send it to a restaurant; this is the custom of people's love for pet dogs over thousands of years. According to historical records, as early as 10,000 years ago, Persians and
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8 common appearance problems of bagged Emerald pear and their solutions
Emerald is an excellent new pear variety bred by the Zhengzhou Fruit Research Institute, developed by crossing New Century and Zaosu. Since 2000, after 6 years of bagged cultivation through top-grafting to change the canopy in our city, we have found that this variety has a regular fruit shape, a smooth and glossy fruit surface, creamy white flesh, a crisp and tender texture with abundant juice, and few stone cells, making it an early-maturing pear variety of excellent quality. However, in production we have found that bagged pears often show abnormal phenomena such as black wrinkling, fruit russeting, tiger-skin markings, floral green coloration on the fruit surface, black spots, cracking, and deformities that affect the external quality of the fruit. For this reason we conducted an investigation and analysis and proposed solutions.
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Current Status, Existing Problems and Future Development Directions of Sericulture in Guizhou
1 Current Status of Development As a traditional export industry of China, the cocoon and silk industry, since entering the "10th Five-Year Plan" period, has adhered to a market-oriented approach, taken development as its theme, and relied on reform, opening up and scientific and technological progress as its driving forces. By comprehensively applying the state's reform and development policies, strengthening macro-control, and intensifying structural adjustment, it has effectively overcome the phenomenon of "drastic fluctuations," enabling the entire industry to emerge from the trough and basically maintain sustained and steady development. The quality of economic operation has improved markedly, with production capacity, efficiency and export earnings surpassing the best historical years. "Chinese silk
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Analysis of the Current Status and Existing Problems of Upland Rice Production
Upland rice, also known as dryland rice, is a type of cultivated rice with strong drought resistance, tolerance to poor soil, and suitability for dryland direct seeding and dryland management. It can be planted in any soil suitable for growing major dryland grain crops such as wheat and corn. It does not require water layer management throughout the entire growth period, and its irrigation volume is only 1/4 to 1/10 that of paddy rice. Upland rice is more drought-tolerant and barren-tolerant than paddy rice, and has the water-saving characteristics of low input and high output. I. Overview of World Upland Rice Production Currently, the world's upland rice planting area is 0.18 billion hectares. In West Africa, upland rice accounts for more than 75% of the rice growing area, and in
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Technical Problems and Solutions for the "Two No" Cotton Cultivation Technique
The "Two No" cotton cultivation technique refers to cotton seedling raising in soilless substrate and transplanting of bare-root seedlings without carrier. From 2004 to 2005, after demonstrations at more than 80 county sites across the country, some technical problems were found, and the following solutions are proposed: 1. Excessive seedbed density Main causes: First, rows were not marked out at 10 cm row spacing and 3 cm plant spacing; second, the sowing rate was too high with too many seeds; third, after emergence, seedlings were not thinned in time, resulting in leggy or spindly seedlings. Solutions: First, mark out rows at 10 cm row spacing and 3 cm plant spacing; second, sow according to plant spacing,
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Common problems and countermeasures during the black fry stage of Japanese eel
At the turn of spring and summer, Japanese eel farming in various regions is mostly in the black fry stage, and it is commonly reported that there are phenomena such as a decline in feeding rate and a tendency for gill rot and tail rot syndrome to occur, seriously affecting the healthy, sustainable, and steady development of Japanese eel farming. The main problems existing in the black fry stage of Japanese eel farming are now analyzed, and some corresponding countermeasures are proposed for reference. 1. Decline in feeding rate: In Japanese eel black fry farming, the phenomenon of a decline in feeding rate or difficulty in increasing the feeding amount occurs, and the main triggering factors are
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Detailed Explanation of Common Problems in Phalaenopsis Cultivation
1. Key points for post-blooming care: After a Phalaenopsis blooms, it can still continue to bloom. Once the flowers fade, promptly cut off the flower stalk growing from the base of the plant to prevent nutrient consumption. 2. The flowers are pale and not vivid because the plant has been kept in a dark indoor place for a long time, resulting in poor ventilation and insufficient light. The frequency of ventilation must be increased, and sufficient light must be provided. 3. Drooping and soft leaves are mainly caused by insufficient light; the duration and intensity of light need to be gradually increased, and the leaf surface should be kept clean. Usually, when cleaning the leaf surface, do not wash or wipe it with water
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Common Problems and Countermeasures in Wheat Aphid Control
Problem 1: Controlling too late. Some farmers do not control according to the control threshold for wheat aphids, but instead control after the wheat aphids have covered the wheat ears. This not only harms the wheat, but also, because control is too late, affects the control effect. Countermeasure: The control threshold for wheat aphids is 500 aphids per 100 ears. Fields that reach the control threshold must be treated with pesticides immediately. Problem 2: Not updating the pesticide used. Not updating the pesticide used will cause wheat aphids to develop resistance to the pesticide used, and the control effect will be extremely poor. Countermeasure: In the early stage of aphid occurrence, per mu
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