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What are the main measures for freeze protection of citrus fruit trees?
In order to prevent sudden low temperatures and cold waves and minimize the degree of freeze damage to citrus, the following measures can be taken for winter citrus freeze protection. 1. Choose a suitable microclimate environment for orchard establishment: For planting citrus on hilly and sloping land, choose south-facing areas that are sheltered from wind and exposed to sun; for establishing an orchard on flat land, windbreak belts should be built on the east, north, and west sides of the citrus orchard. Windbreaks can use evergreen tree species such as camphor and privet.
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Pine trees are monoecious plants. Do they bloom and bear fruit in spring?
Pine trees are monoecious plants, and their most obvious feature is that the leaves are needle-shaped, usually in bundles of 2, 3 or 5 needles, and in people's general impression, pine trees have no flowers. So do pine trees bloom and bear fruit in spring? According to Master Xiao, a pine tree grower in Loudi City, pine trees not only
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Main Pests and Diseases of the Deciduous Large Tree Ginkgo: Damage Patterns and Control Methods of Spider Mites
The ginkgo tree is a deciduous large tree with a trunk diameter of up to 4 m. The fruit of the ginkgo tree is commonly known as white fruit, so ginkgo is also called the white fruit tree. The ginkgo tree grows slowly and has an extremely long lifespan. Under natural conditions, it takes more than 20 years from planting to bearing ginkgo fruit, and only after 40 years can it bear fruit in large quantities.
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Causes of Yellowing Leaves on the Dragon's Blood Tree and How to Fix Them
Dragon's blood tree, also known as Dracaena, Shanhaidai, or Longxu Tie, is one of the more common indoor potted flowers. It is very dazzling under sunlight or lamplight and is quite favored by flower enthusiasts. But to successfully grow a dragon's blood tree, you must avoid yellowing leaves. So
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Why Are Orange Tree Leaves Turning Yellow? Causes and Solutions
During the Spring Festival, many people's homes certainly include an orange tree, but problems are inevitably encountered during the growing process. For example, yellowing leaves. The causes of yellowing leaves on orange trees are many-sided. Such as insect pests, infectious diseases, nutrient imbalance
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What flowers and trees are suitable for planting in acidic soil?
Soil is the foundation for the growth of soil-grown plants. Every plant has different soil requirements; they don't just take any soil. You need to consider fertility and pH level, among other things. So what flowers and trees are suitable for planting in acidic soil? What flowers are suitable for planting in acidic soil? Every time an important
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How many years does it take for a tea-oil camellia tree to bear fruit, and what is the yield per mu?
Tea-oil camellia trees generally take 3 years to bear fruit when planted, and enter full production after 5-7 years. During a well-managed full-production period, each tea-oil camellia tree can produce 6-10 kg of camellia fruit, which dries into about 2-3 kg of dry camellia seeds. On average, one mu of camellia land can plant 90 tea-oil camellia trees, so the annual yield of dry camellia seeds per mu
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Persistent Rain and Snow Arrive in Many Regions: How to Protect Vegetables, Fruit Trees and Wheat Against a Late Spring Cold Snap
According to information released by the National Meteorological Administration: average temperatures are expected to drop by 6-8°C in northwestern Heilongjiang, southeastern North China, southern Shaanxi, most of the Huang-Huai region, Jianghan, Jianghuai, most of Jiangnan, central and southern Guizhou, and central and northern South China; among these, local temperature drops in central Guangxi and southern Jiangxi
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Fertilizer Requirements of Coconut Trees in China and High-Yield Fertilization Techniques and Timing
Fertilizer Requirements of Coconut Trees in China and High-Yield Fertilization Techniques and Timing: The coconut tree is a perennial tropical fruit tree with high yields. Each year it needs to absorb large amounts of nutrients from the soil; if nutrients are not replenished in time, it will have a considerable impact on coconut fruit production. According to research,
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Fertilizer Requirements of Mulberry Trees in China and High-Yield Fertilization Techniques and Timing
Fertilizer requirements of mulberry trees in China and high-yield fertilization techniques and timing: The mulberry tree is a perennial deciduous woody plant. Its leaves are harvested multiple times each year for silkworm rearing, removing large amounts of nutrients from the soil. Therefore, mulberry trees have relatively high nutrient needs. Producing 100 kg of fresh mulberry leaves requires approximately 1.5-2 kg of nitrogen, 0.8-1.2 kg of phosphorus, and 1.0-1.6 kg of potassium. Among these, nitrogen and potassium are needed in the greatest amounts. Nutrient uptake by mulberry trees varies across different periods. In spring, as mulberry trees sprout branches and leaves, before the fifth leaf unfolds, the nutrients required mainly come from reserves stored within the tree. After the sixth and seventh leaves unfold, branches and leaves grow rapidly, and nutrient uptake accelerates. By the spring silkworm season (May in areas south of the Yangtze River), mulberry tree growth enters the peak period, and nutrient uptake reaches its first peak. After summer pruning, root nutrient uptake stops. As new sprouts emerge, mulberry branches and leaves grow rapidly again, gradually entering the second vigorous growth period (June, July, and August in areas south of the Yangtze River), with nutrient uptake correspondingly reaching a second peak. Entering autumn and winter, mulberry tree growth slows, nutrient uptake decreases, until dormancy. <p style="text-align: center;"><span style="line-height:1.6; text-indent:2em"></span></p> <p style="text-indent:2em;">Mulberry fertilization should determine the amount and timing of application based on nutrient requirements. At an annual fresh leaf yield of 2 tonnes per 667 sq m, it is necessary to apply 30-35 kg of nitrogen, 12-14 kg of phosphorus, and 15-17 kg of potassium, with a nitrogen-phosphorus-potassium ratio of 10:4:5 (if producing silkworm eggs, the nitrogen-phosphorus-potassium ratio is 5:3:4).</p> <p style="text-indent:2em;">Mulberry fertilization is divided into spring fertilizer, summer fertilizer, autumn fertilizer, and winter fertilizer. The type and amount of fertilizer should be determined according to seasonal changes, the growth patterns of mulberry trees, and their fertilizer needs.</p> <p style="text-indent:2em;">1. Spring fertilizer: When mulberry trees sprout in spring, they consume nutrients stored within the tree. According to research, spring fertilizer is only absorbed and utilized by mulberry trees when approximately the fifth spring leaf has unfolded. Spring fertilizer is generally nitrogen-based, such as urea, at 15-20 kg per mu. To reduce fertilizer loss, it should be applied in two split applications, in mid-March and early April respectively.</p> <p style="text-indent:2em;">2. Summer fertilizer: Entering June and July, with high temperatures and ample rainfall, this is the period of most vigorous mulberry growth and the greatest nutrient demand. If fertilizer is applied promptly to supply sufficient nutrients, mulberry branches and leaves grow vigorously, branches are long, and summer and autumn leaf yields are high. To improve fertilizer efficiency, two split applications are recommended. The first should be applied as early as possible after the spring silkworm rearing ends, at 20 kg of urea per mu (late May); the second in early to mid-July, at 15 kg of urea per mu, combined with 20 kg of phosphate fertilizer and 5-10 kg of potassium fertilizer. Apply in furrows or broadcast with weeding, and mix the fertilizer into the soil.</p> <p style="text-align: center;"></p> <p style="text-indent:2em;">3. Autumn fertilizer: Generally applied in mid to late August, at 15 kg of urea per mu. Autumn fertilizer can sustain the continued growth of mulberry branches and leaves, delay the hardening of autumn leaves, and improve autumn leaf quality. It can also increase the stored nutrients in mulberry trees, enhancing cold resistance and the sprouting rate the following spring, and also helps increase spring leaf yields. However, autumn fertilizer should not be applied too late or in excessive amounts, at the latest before the end of August, and should be appropriately combined with phosphorus and potassium fertilizers.</p> <p style="text-indent:2em;">4. Winter fertilizer: Fertilizer applied after mulberry leaves fall is called winter fertilizer. Unlike spring, summer, and autumn fertilizers, winter fertilizer has no direct effect on leaf yield. Its main purpose is to improve soil aggregate structure and increase soil fertility. Winter fertilizer generally uses organic materials such as compost, garbage, and rice straw, which decompose through the action of soil microorganisms, releasing nitrogen, phosphorus, and potassium as well as other inorganic nutrients for mulberry trees to absorb and utilize. Its fertilizer effect is slow but lasting, with comprehensive nutrients.</p>
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