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What are the common problems in fruit tree training and pruning?
Common problems in fruit tree training and pruning
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How to solve the problem of dead mushrooms in straw mushroom cultivation
Causes of dead mushrooms in straw mushroom cultivation: poor coordination between ventilation and moisture retention in the mushroom house. Straw mushrooms are aerobic fungi and need plenty of water; too much ventilation easily leads to water loss and death. Insufficient ventilation easily leads to excessive carbon dioxide and death from oxygen deprivation. Sudden temperature changes in the mushroom house. If ventilation and cooling are not carried out early enough during prolonged high temperatures, or if too much well water is sprayed on the floor, the temperature drops too quickly, and the small mushrooms cannot withstand the sudden temperature change and die in batches. Poor spawn quality and damage from pests and diseases. Spawn of the proper age dies after aging because it cannot be cultivated in time. If the mycelial vigor is poor, nutrient accumulation after spawning is insufficient, and the mushrooming
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How can the problem of dead mushrooms be prevented in mushroom cultivation?
1. Prepare the compost scientifically and reasonably so that the carbon-to-nitrogen ratio reaches 28-30:1, and do a careful job of composting; 2. Select high-quality spawn, promptly discard aged and contaminated spawn, create conditions suitable for mycelial growth and development, and strictly prevent high-temperature cultivation; 3. During the fruiting period, pay close attention to weather changes, adjust the shed temperature according to the air temperature, strengthen ventilation and air exchange, and strictly prevent high-temperature conditions inside the shed; 4. Make sure the mushroom shed is ventilated and aired regularly (generally 2-3 times a day); when the temperature is high, ventilate in the early morning and evening or at night to keep the air fresh. 5. Water based on the mushrooms
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What are the common problems in dryland rice cultivation?
1. How to grow enough rice seedlings under drought and water shortage conditions. The whole year's success lies in spring. This vividly and profoundly illustrates the importance of seedling raising in the whole year's production. Under this year's special conditions, growing enough seedlings is the key measure to win the battle against drought and secure a bumper harvest. To grow enough rice seedlings under drought and water shortage conditions, the first thing is to determine the seedling raising method according to local conditions, and the second is to implement the seedling raising technical measures. When determining the seedling raising method, there are three approaches to choose from for reference: first, in places where water can be obtained locally, promote
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Analysis of the problems existing in the development of the eel industry and the countermeasures and suggestions
I. Seedlings and fingerlings The main species farmed for eel in China are the Japanese eel (Anguilla japonica) and the European eel (Anguilla anguilla). The resources of both the European eel... have already approached exhaustion, with annual production falling from 3,000 tons 30 years ago to 100-200 tons. From June 3 to 15, 2007, at the Conference of the Parties to the "Washington Convention" (CITES) held in the Netherlands, the European eel was listed in Appendix II of the Convention on Endangered Species of Wild Fauna and Flora, and this will be formally implemented starting in January 2009: China imports about 60 tons, or about 150 million individuals, of European eel seedlings and fingerlings annually, and farmed European eel accounts for more than 1/3 of eel production, while European eel accounts for about 40% of exported roasted eel. Japanese eel resources have also severely declined. In recent years, the seedling and fingerling resources of Japanese eel in Asia have remained at about 100 tons, and the annual catch in recent years has remained at 80-100 tons. In 2008, the output of European eel seedlings and fingerlings was about 90 tons, half of a normal year. The output of Japanese eel seedlings and fingerlings was about 35 tons, one third of a normal year. The severe shortage of seedling and fingerling resources has led to soaring prices. Moreover, artificial breeding of eel seedlings and fingerlings will not be able to form production capacity in the near future.
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What are the easily overlooked problems in the process of selecting and retaining replacement gilts?
(1) The selection and retention procedure is unreasonable, and the selection process is simplified: In some pig farms, the selection and retention process for replacement gilts is very simple, with no fixed procedure. It is only after the breeding pigs finish testing that a simple evaluation is made and they are selected and retained. This can easily lead to an imbalance in the number of animals retained from each bloodline and a decline in the production performance of breeding pigs. Therefore, the selection and retention of replacement gilts must rely on a fixed procedure. Generally, the selection and retention of replacement gilts must go through three processes: primary selection, intermediate selection and final selection. Primary selection is when moving from the farrowing stage to the rearing stage, determining a candidate group 4 times the number to be retained for breeding; intermediate selection refers to the period from nursery to fattening
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The problem of "many flowers but few fruits" in Feizixiao lychee has been solved
On May 20, the "Early-maturing and High-yield Cultivation Technology for Feizixiao Lychee" passed the scientific and technological achievement appraisal of Maoming City. This technology breaks the traditional practice of delaying the flowering period of Feizixiao to obtain fruit, concentrates nutrients for flowering and fruiting, and effectively solves the problem of "many flowers but few fruits" in Feizixiao. With this technology, the average annual yield per tree reaches 25.59-48.47 kg, an increase of 17.63%-28.07% compared with the control; the fruit set of the first batch of flowers accounts for 70%-80%, 40% more than that of trees under ordinary management; the fruit from the first batch of flowers matures 3-5 days earlier.
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What are the two major problems commonly seen in garlic cultivation?
In recent years, in the main garlic-producing areas such as Jinxiang, Juye, Cangshan, Zhongmu, and Kaifeng, quite a few problems have arisen from a series of causes including continuous cropping, poor management, and unscientific fertilization. They can be summed up in 9 words: "yellow leaves, dry tips, dead seedlings, low yield." The author now introduces to the broad ranks of agricultural technology extension workers and garlic growers the causes of the two most headache-inducing problems that have appeared in garlic cultivation in recent years. Problem one: the garlic looks normal before winter, with a few yellow leaves and dry tips, but after green-up the garlic seedlings turn severely yellow.
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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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