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Fertilizer Requirements of Hops and High-Yield Fertilization Techniques and Timing
Hops originated in Europe, the Americas and Asia. They can be used for brewing beer and for medicinal purposes. So what are the fertilizer requirements of hops in China, along with high-yield fertilization techniques and timing? Hops are perennial herbaceous plants that can continue growing for about 20 years after planting. According to reports
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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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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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Spring Cultivation Techniques for Shiitake Mushrooms and Common Pest and Disease Control Methods
When cultivating shiitake mushrooms in spring, pay attention to the following points: 1. Block selection. Thoroughly dry the fully colonized shiitake blocks and logs, and select uncontaminated, intact blocks or logs for processing. If the old mycelial skin is too thick, scratching can be done, and they can be used only after the mycelium has healed. 2.
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A Detailed Guide to Angelica Dahurica Planting Time, Producing Areas and Cultivation Techniques
Angelica dahurica prefers a mild, humid climate and a sunny environment. Correctly mastering the planting time of Angelica dahurica is the key to increasing its yield. To increase the yield of Angelica dahurica, what else do we need to know? Planting time of the traditional Chinese medicine Angelica dahurica? Producing areas of Angelica dahurica? Cultivation techniques for Angelica dahurica
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Occurrence, damage patterns and control techniques of the migratory pest diamondback moth
The diamondback moth belongs to the order Lepidoptera, family Plutellidae; aliases: small green worm, two-pointed tip. The diamondback moth is a migratory pest with many occurring generations, strong reproductive capacity, a wide host range, a high level of pesticide resistance, and difficulty of control. It mainly damages cabbage, red cabbage, broccoli,
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How to Use Corn and Sugarcane Straw Returning Machines in Autumn: Techniques and Precautions
Autumn mechanized straw returning technology refers to the use of different straw crushing and returning machines to directly chop and return corn, rice, sugarcane and other straw to the field. (1) Corn straw returning technology 1. Technical content After corn ears are picked, use a corn straw returning machine to chop the corn
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Correct Use Methods and Operating Techniques for Combine Harvesters
During use, as time goes on and its technical condition deteriorates, a combine harvester's working capacity will gradually decline, but correct use and operation can extend its service life and improve its reliability. So, what are the
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2017 Soybean Variety Selection by Accumulated Temperature Zone and High-Efficiency Cultivation Techniques
Recently, the Heilongjiang Provincial Agricultural Commission formulated the "Heilongjiang Province 2017 Crop High-Quality and High-Efficiency Variety Planting Zoning Layout" (hereinafter referred to as the "Zoning Layout") and specialized supporting cultivation techniques for each crop. Below, the editor will share the soybean variety selection by accumulated temperature zone and high-efficiency cultivation techniques.
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High-yield fertilization techniques and precautions for malting, feed, and food barley
Barley is the general term for hulled barley (glume read fu, level tone) and naked barley. Hulled barley is generally called covered barley, characterized by the husk adhering to the grain; in naked barley the husk and grain are separate, and it is called naked barley - known as qingke on the Qinghai-Tibet Plateau, yuanmai in the Yangtze River basin, and mimai in North China
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