-
How to mix fish feed? Sharing several practical formulas
1. Suitable for grass carp or silver carp and bighead carp: rice straw powder 70%, soybean cake 15%, cottonseed cake 10%, cornmeal 5%, plus bone meal 1%, salt 0.5%, and an appropriate amount of vitamins. 2. Suitable for cage-cultured grass carp: soybean stalks or peanut vines 60%, soybean cake 15%, rapeseed cake (or cottonseed cake) 10%, cornmeal 10%, fish meal 5%, plus clam shell powder (or bone meal) 1%, salt 0.5%. 3. Suitable for grass carp: dried green grass powder (or peanut vines, sweet potato vines) 45%, soybean cake
-
Six fish feed formulas, useful reference for scientific fish farming
1. Suitable for tilapia in flowing water and cage culture: grass meal 20%, fish meal 30%, soybean cake 20%, corn gluten meal 20%, rice bran 20%, wheat bran 10%, corn flour 5.5%, bone meal 1%, salt and vitamins together 0.5%. 2. Suitable for grass carp: sweet potato vine meal 45%, soybean cake 13%, rice bran 15%, wheat bran 12%, fish meal 3%, corn flour 10%, bone meal 1.5%, salt 0.5%. 3. Suitable for bighead carp, silver carp and grass carp: rice straw
-
Detailed Explanation of the Key Points of Formula Fertilization Technology for Cotton
Currently, it is the critical period for cotton land preparation and fertilization, in order to do a good job in cotton formula fertilization and lay the foundation for high quality and high yield. The cotton fertilization technology is now provided to the majority of cotton farmers for reference: 1. Pay attention to the application of farmyard manure: farmyard manure can improve the soil, enrich soil fertility, and contains various nutrient elements needed by crops, providing what crops need for growth. It has complete nutrition and is rich in organic matter, and has a significant effect on improving the soil and increasing the utilization rate of chemical fertilizers. 2. Increase the application of phosphate fertilizer: phosphorus has low mobility in the soil and dissolves and releases slowly,
-
Detailed Explanation of Key Technical Points for Formula Fertilization of Cotton
Cotton has an indeterminate growth habit, strong regeneration capacity, highly controllable plant architecture, and a high fertilizer demand. Generally speaking, adequate fertilizer is the foundation for high yield and quality in cotton. Sufficient phosphate fertilizer can promote vigorous growth of cotton plants, increase boll weight, and advance maturity. Potassium fertilizer is a catalyst for various enzymes in plants, and can promote photosynthesis and cellulose synthesis. The fertilization technique for cotton is the eight-character formula fertilization method of "adjust nitrogen, increase potassium, supplement phosphorus, spray boron." Specifically, the following 5 technical measures should be well implemented. 1. Attach importance to the application of farmyard manure
-
How to prevent deformed mushrooms when growing oyster mushrooms in winter?
When cultivating oyster mushrooms in winter, poor management can easily lead to various deformed mushrooms, reducing their commercial value and thus lowering economic returns. 1. Big-foot mushroom: after the primordia form, the differentiation and development speed of the cap is inconsistent, showing only growth of the stem, thick at the bottom and thin at the top, with no mushroom umbrella forming; the diameter of the cap is smaller than the diameter of the stem, forming a big-foot deformity. The stem of this kind of mushroom is relatively hard, and its commercial value is relatively low. Preventive measures: pay attention to ventilation and reasonable watering. Even during continuous low-temperature weather, during the fruiting period you should still take advantage of the warmer time of day to carry out short periods of ventilation.
-
How to Prevent Deformed Oyster Mushrooms? Detailed Practical Measures
During oyster mushroom production, inadequate management measures and unsuitable environmental conditions often easily lead to the formation of deformed mushrooms. In production, the causes of deformed mushroom formation should be identified, and effective prevention and control measures should be taken. 1. Spherical or flask-shaped: The stipe of the oyster mushroom is spherical or flask-shaped, the surface is uneven or twisted into a wavy shape, the cap cannot form, with only a very small point or obvious icicle-like stripes; this is caused by viral infection. It should be prevented and controlled by spraying or smearing Virus K, Virus A, or Xiao Jun Ling. 2. Cauliflower-shaped
-
How to reasonably choose a scientific formula for oyster mushroom cultivation?
Oyster mushrooms have low requirements for raw materials, and many industrial and agricultural by-products can be used as raw materials. However, whether the carbon-to-nitrogen ratio in the growing medium is scientific and whether the amounts of other supplementary materials added are reasonable are issues that cannot be ignored in oyster mushroom production. At present, bag-cultivated oyster mushrooms mainly use cottonseed hulls as the raw material, so the quality of the cottonseed hulls directly affects the level of oyster mushroom yield and even whether cultivation can succeed. Fresh, high-quality cottonseed hulls should be selected; if moldy and deteriorated cottonseed hulls are used, it will cause contamination by weed molds and may even lead to cultivation failure. Pesticides or other
-
Mycelial film is a formidable enemy of high-yielding oyster mushrooms, and growers must be vigilant
Casing soil cultivation is an important measure for obtaining high yields of oyster mushrooms. However, before fruiting or after the first flush is harvested, the casing soil surface often forms an impermeable, airtight mycelial film from vigorously growing aerial hyphae, affecting fruiting. This mycelial film consumes a large amount of nutrients, causing reduced oyster mushroom yields, and must be prevented in production. Causes of mycelial film formation: First, when bag-cultivated oyster mushroom substrate is not fully colonized before casing soil is applied, the hyphae undergo a second vegetative growth on the surface, forming a mycelial film; Second, the cultivation substrate formula is unreasonable, with excessive nitrogen content blocking
-
How is scorpion venom produced? A detailed explanation of its formation process
The medicinal value of scorpions depends mainly on scorpion venom. The poisoning symptoms caused when people are stung by scorpions are also the effect of scorpion venom. The toxicity of scorpion toxin is similar to that of snake toxin and is extremely severe. Scorpion venom acts on frogs, guinea pigs, rabbits and other animals, and can produce poisoning in all of them. Its median lethal dose (LD50) for mice is 1.6 milligrams per kilogram of body weight (male mice) and 1.4 milligrams (female mice). However, its toxicity is destroyed when heated to 100°C for 30 minutes. The pharmacological functions of scorpions depend mainly on scorpion venom. Scorpion venom
-
A Complete Guide to Management Key Points During the Cotton Yield Formation Period
This year, the light and heat conditions in the early stage were relatively favorable for cotton growth, but the recent low temperature, scant sunlight, and rainy weather have been extremely unfavorable to cotton growth, and boll shedding has increased noticeably. We are currently in the critical period for cotton yield formation. To secure a high cotton yield, the following management measures should be strengthened: 1. Supplemental application of top-covering fertilizer and foliar spraying. For cotton fields with many set bolls and fields showing premature senescence, apply 5-7.5 kg of urea per 667 sq m, or combine this with pest control for foliar spraying. 2. Reasonable pruning and chemical regulation. Due to the recent rain
条件筛选