-
Do chickens need vitamin supplements during raising?
Of course they do. The vitamins in feed are far from sufficient, and some are destroyed during processing. Although the required amount of vitamins is very small, their role is enormous. They not only participate in regulating metabolism in the body, but are also usually components of certain enzymes. Vitamins are divided into fat-soluble vitamins and water-soluble vitamins according to whether they dissolve in water. Fat-soluble vitamins refer to vitamins that do not dissolve in water but only in fat, including vitamin A, vitamin D, vitamin E, and vitamin K. Modern science
-
How to manage cotton during the bud and boll stage? Strengthening management is key
Bud stage management: After cotton enters the bud stage, all regions should manage according to the seedlings, with classified management. For first-class cotton fields, where cotton plants have vigorous vegetative growth, reasonable regulation should be carried out to shape an ideal plant type and promote early boll setting, more bolls, and large bolls; for second-class cotton fields, promotion and control should be combined to encourage cotton plants to build a high-yield framework early; for third-class cotton fields, which develop late and grow weakly, the method of promoting both water and fertilizer should be adopted to encourage cotton seedlings to grow early. Focus on the following aspects: 1. Grasp "four rush" management. For cotton fields interplanted in wheat fields, after harvesting wheat, promptly rush to water, rush to
-
How to manage cotton during the bud stage? Keeping it steady is the key
Currently, cotton is gradually entering the bud stage. As the saying goes: "For cotton to be high-yielding, steady growth during the bud stage is the foundation." Based on my investigations in the countryside and problems encountered during technical guidance, combined with this year's climate characteristics and cotton growth conditions, I believe that bud-stage management should be based on "simplification, labor saving, high yield, and high efficiency," centered on the word "steady," and measures should be flexible and tailored to the seedlings. The specifics are as follows: 1. Intertillage and earthing up. With the promotion of plastic-film cotton and the use of herbicides, the number of intertillage operations has decreased significantly, but necessary intertillage should still be
-
How to manage cotton during the squaring stage? These key points you need to master
The cotton squaring stage is an important turning point in the life of the cotton plant. During this period, vegetative growth and reproductive growth proceed simultaneously, with vegetative growth predominating. Production management should, on the basis of strong seedlings and early development, adopt reasonable measures to promote and control growth, so as to achieve steady plant development and build a good framework for a high yield. The technical key points are: 1. Continue to do a good job of digging drainage ditches to prevent both surface waterlogging and subsurface waterlogging. 2. Intertill and earth up to promote the development of the cotton root system. 3. Prune in a timely manner. Hybrid cotton has vigorous vegetative growth, with more leaf branches and superfluous buds. Depending on the field planting density, it is advisable to keep 1-2 leaf branches per plant,
-
How to strengthen cultivation and management during the cotton bud stage? Keep these technical key points in mind
After cotton transplanting this year, continuous drought and little rain, unstable temperatures, and a long seedling-hardening period seriously affected plant development. In addition, large populations of aphids and red spider mites caused severe damage, leading to a second seedling-hardening in cotton seedlings, with a few seedlings showing red stems all the way to the top and true leaves drying up and falling off. Recent rainfall has alleviated the drought, and seedling conditions have begun to improve. Transplanted cotton now has 7-9 true leaves and has begun to form buds, and cotton after wheat (rapeseed) has also begun to develop, but overall seedling conditions are not as good as in previous years. The bud stage is the most important period in the life of cotton, and the following cultivation and management measures should be emphasized
-
How to cultivate cotton during the squaring stage? A detailed explanation of the key technical points
In 2008, the climate during the cotton squaring stage was extremely unfavorable for cotton growth, with low temperatures and high humidity, causing cotton growth to lag 3-5 days behind the same period in previous years, with severe cotton diseases and generally weak growth. How to strengthen management during the squaring stage and build a good framework for high yield? The following points should be noted in management: Apply squaring fertilizer steadily: Apply fertilizer scientifically according to soil fertility conditions, base fertilizer application, and cotton growth. Focus on phosphorus and potassium fertilizers. For cotton fields with high soil fertility, sufficient base fertilizer, and vigorous growth, it is not suitable to apply nitrogen fertilizer as a top dressing; instead, 25-40 kg of cake fertilizer per mu may be appropriately applied.
-
What are the key technical points for managing Schisandra chinensis during its growing period?
1. Water management: In the first year after planting, water should be applied multiple times to ensure soil moisture content, thereby ensuring the survival rate of the seedlings and the normal growth of young trees. For trees that have entered the fruiting stage, in a normal year, ensure 4-5 waterings: pre-flowering water, post-flowering water, fruit-swelling water, and freeze-up water, while combining with intertillage and weeding. After watering, loosen the soil immediately to preserve moisture and prevent soil compaction. 2. Fertilization management: In the first year after planting, in early to mid-June, apply 15-20 kg of urea per 667 sq m as a top dressing. For 2-year-old plants, in early May, apply phosphorus
-
Management Methods and Technical Key Points for Shiitake Mushrooms During the Fruiting Period
After the shiitake mushroom logs change color, the mycelium is fully mature and has accumulated rich nutrients. Under the stimulation of certain conditions, it rapidly transitions from vegetative growth to reproductive growth, initiating the differentiation and development of fruiting body primordia, which marks the beginning of the fruiting period. I. Promoting bud formation: Shiitake mushrooms are a type of fungus that fruits under variable temperatures. A certain temperature difference, scattered light, and fresh air are beneficial to the differentiation of fruiting body primordia. During this period, the covering film on the beds is generally removed, and the temperature in the fruiting greenhouse should preferably be controlled at 10-22°C, with a day-night temperature difference of 5-10°C.
-
Key points to note during the fruiting period of shiitake mushrooms: regulation of temperature and humidity differences
Increase the day-night temperature difference. In late autumn and early winter, daytime temperatures are high and nighttime temperatures are low. Cover with a layer of film during the day so that the temperature inside the mushroom bed is 2°C-3°C higher than outside the film, then open the film after 10 p.m. so the temperature drops rapidly. After several consecutive days, a large number of primordia will emerge on the surface of the mushroom logs and develop into mushroom buds. Control the humidity of the mushroom yard. After color change, initially maintain the relative humidity of the mushroom bed at about 85%. As large numbers of mushroom buds differentiate into caps and stipes, lower the air humidity to about 80%. Create a suitable dry-wet difference. In the early stage of autumn mushrooms, the internal water content of the mushroom logs is relatively sufficient and can safely
-
What are the common diseases of foxes and raccoon dogs during gestation and the whelping period?
Foxes and raccoon dogs have now entered the critical stage of gestation and whelping since the spring estrus and mating, and a series of changes have taken place in their physiological functions, making them extremely sensitive to external stimuli, so the incidence of disease is very high. Recently many readers have consulted us on this matter. In response, the editor has specially invited Professor Hua Shufang of the Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, to give an introduction to the prevention and treatment of common diseases of foxes and raccoon dogs during gestation and the whelping and lactation period. 1. What are the manifestations of gastroenteritis during gestation and the whelping period, and how is it prevented and treated? Answer: During gestation and the whelping period, the
条件筛选