-
Management methods and technical key points after rhododendrons bloom
Pruning and shaping: after rhododendrons finish blooming, the spent flowers generally need to be removed by hand, followed by appropriate thinning of branches, cutting away overly dense branches, and letting them send out new growth. Fertilizer and water management: in northern regions, water is on the alkaline side and relatively hard, and watering plants with it over the long term can easily cause soil alkalization, affecting flower growth. Therefore, before watering, the water should be stored in a container for more than 24 hours and used after the chlorine has evaporated. Alternatively, water mixed with an appropriate amount of ferrous sulfate or edible white vinegar can be applied about once every 10 days. Rhododendrons do not need much fertilizer, and it is generally applied along with watering. You can
-
Dawn Redwood (Metasequoia glyptostroboides) Cutting Propagation Methods and Key Technical Points
Dawn redwood propagation by cuttings: from late March to early April, take cuttings and insert them immediately. Cut cuttings from 1- to 2-year-old seedling stock plants or from new shoots sprouted in the current year. Treat the lower end of the cuttings with naphthaleneacetic acid at a concentration of 0.5 per 10,000 (0.005%), soaking for 20 to 24 hours to promote rooting and improve survival. Insert about 120 cuttings per sq m. After insertion, keep the seedbed moist. New roots sprout in about 40 days; apply diluted human urine and manure once every 10 days, for 3 to 5 consecutive applications. In June, nitrogen fertilizer may be applied in small amounts several times, at 3 to 4 kg of urea per mu, diluted with water and poured on. In early August, apply phosphorus and potassium fertilizer once; per mu use
-
Detailed Explanation of Arrowhead Seed Retention Methods and Technical Key Points
Before collecting seeds, a seed retention field must be selected. Choose a high-yielding field plot with pure varieties, robust growth, light pests and diseases, and few bolting and flowering plants for seed retention, and harvest when the aboveground parts have completely withered. After harvesting, select corms that conform to the characteristics of this variety, are relatively large, heavy, and have relatively curved terminal buds as seeds. Curved terminal buds are conducive to nutrient accumulation and are not easy to sprout. The selected seed corms should have their terminal buds broken off, with a small part of the upper corm attached. That is, pour the arrowhead terminal buds into a 600-fold solution of 50% carbendazim and soak for 20-25 minutes, then remove
-
How to cultivate Pleurotus citrinopileatus for high yield? Detailed explanation of key technical points
Pleurotus citrinopileatus is a wild species domesticated in recent years, and has not yet formed large-scale production, with only occasional small amounts appearing on the market. Basic formula for substrate preparation: 250 kg cottonseed hulls, 5 kg superphosphate, 4 kg gypsum powder, 1 kg urea, 1 bag of edible mushroom three-dimensional nutrient essence (mixing bag). Key points to note: when mixing ingredients, according to your own technical level, increase the moisture content of the substrate as much as possible; after spawning, keep the mushroom shed temperature at 20°C~25°C. For mushroom shed treatment, continuously spray 2 rounds of Baibingquwuzong, with a 2-day interval, using one bag per 20 sq m
-
Pollution-Free Control Methods and Technical Key Points for Edible Mushroom Diseases
In the process of edible mushroom production, as long as management is carried out according to the biological characteristics of the selected mushroom strain, physiological diseases will not occur. When infectious diseases occur, pesticides must be applied in accordance with pollution-free requirements, with prevention as the priority, and never use pesticides casually. Long-stemmed mushrooms and unopened caps are typical symptoms of oxygen deficiency, especially when semi-underground mushroom sheds are used for cultivation. This phenomenon occurs commonly, severely reducing mushroom quality and affecting production efficiency. Solution: strengthen ventilation management. In low-temperature seasons, open the ventilation openings and door between 10 AM and 2 PM.
-
Processing Methods and Technical Key Points for Pine Needle Health Tea
Pine needles contain large amounts of chlorophyll, amino acids, vitamins C and K, rutin, and inorganic salts such as iron, phosphorus, and calcium. Among these, vitamin C can reduce the accumulation of cholesterol in the human body, and vitamin K can promote the body's absorption of calcium and has the function of regulating heart function. Tea made from pine needles has health benefits including nourishing the body, weight control and slimming, boosting immunity, and delaying aging. The technical key points for processing pine needle health tea are presented below for reference. 1. Leaf collection: Select pine trees 5 to 15 years old, and pick their disease-free
-
Detailed Explanation of Key Technical Points for Picking and Processing Famous Autumn Tea
(1) Tea leaf picking. Pick lightly and handle lightly. For tea bushes with good growth and a thick layer of green leaves, you may leave fish leaves or pick without leaving leaves. For those with poor growth and a thin layer of green leaves, especially tea bushes that suffered severe early drought, with many fallen leaves and exposed bare branches, the main approach should be to retain and nurture them, and in the later stage adopt the method of tipping and picking while leaving leaves. This allows the tree vigor to recover quickly and benefits a bumper spring tea harvest the following year. (2) Fresh leaf storage. In early autumn, temperatures are high and the climate is dry; fresh leaves have lower moisture content than spring tea. During transport and storage, it is necessary to prevent too-rapid moisture loss and excessive dehydration of fresh leaves. The containers holding fresh leaves must be well
-
Detailed Explanation of Key Technical Points for Autumn Fish Fry Cultivation
Autumn water temperatures are suitable, making it a great season for rapid growth of fish fry. Doing a good job of autumn fish fry cultivation is crucial. The key technical points for autumn fish fry cultivation are as follows: 1. Pond clearing. After 2-3 months of fish fry cultivation, pond water quality deteriorates, natural food decreases, and harmful substances and pathogenic bacteria increase. Therefore, after the beginning of autumn, fish fry should be transferred to ponds that have been cleared and disinfected for cultivation. Under conditions where water sources and fish ponds are relatively insufficient, all fish fry can be transferred out for temporary holding, and the original fish fry pond can be disinfected with 75-100
-
Detailed Explanation of Key Technical Points for Spring Broodstock Cultivation
After the beginning of spring, the water temperature gradually rises back up, especially during the pre-spawning stage from March to April, when fish activity intensifies, development accelerates, and food intake increases accordingly. This stage is an important period for gonadal development of broodstock. Practice has proven that the quality of spring broodstock cultivation is the key to the success or failure of artificial breeding of Chinese carp, therefore, the following points must be well implemented. 1. Feeding: Grass carp broodstock are mainly fed grass and concentrated feed. According to the availability of grass, generally grass is fed in the morning and concentrated feed in the afternoon, both of which should be fed at fixed feeding platforms. When green feed is scarce in early spring,
-
Key Technical Points for Spring Intensive Conditioning of Broodstock
Spring is a critical period for gonadal growth in broodstock. Whether broodstock are conditioned well or poorly at this stage directly affects the success or failure of artificial propagation of Chinese carp, so on the basis of routine conditioning, spring conditioning must be given special attention. 1. Adjust the water level of the broodstock pond and raise the water temperature. On sunny days, drain water promptly to lower the pond water level and speed up the rise in water temperature. The amount drained can be about 30 cm of water level reduction. When rainy days or cold air arrive, fill the pond in advance to slow the loss of heat from the pond water. 2. Strengthen feeding management and provide sufficient, high-quality feed and fertilizer.
条件筛选