Mulberry is a perennial woody plant. Mulberry is the main vegetative organ of mulberry, and it is also the main "grain" of silkworm. Therefore, the amount of mulberry leaves will directly affect the healthy growth of silkworms. The high yield cultivation techniques of mulberry leaves can be considered from the following aspects.
1. Mulberry trees should be planted in close to 800-1000 plants per mu with a spacing of about 1.4 meters and a plant spacing of about 0.5 meters. A tree with less than two layers of stems should be cultivated.
2. Reasonable fertilization in the mulberry garden Each picking 50 kg of mulberry leaves needs to supply mulberry trees with 0.75 kg of pure nitrogen fertilizer, 0.3 kg of phosphate fertilizer and 0.45 kg of potash fertilizer. If mulberry mulberry leaves produce 1500 kilograms, 22.5 kilograms of nitrogen fertilizer, 8.5 kilograms of phosphate fertilizer, and 13 kilograms of potash fertilizer should be applied, which translates into about 4,500 kilograms of manure. Fertilizer can be applied in 4 separate seasons. Spring fertilizer was applied in March, mainly based on available nitrogen fertilizer. Summer fertilizer is applied after the summer harvest, and can be divided into 2 times. The first time in early June, the second time in early July, a total of 1,500 to 2,000 kilograms of manure urine is administered twice. Autumn fertilizer is applied in mid-August. Each mulberry mulberry garden uses 15 kg of urea. The winter fertilizer is applied in combination with winter plowing after mulberry defoliation. No matter what kind of fertilizer is applied, the ditch or digging hole should be applied, and the soil should be covered. Mulberry gardens should promote a variety of green manures.
3. Timely irrigation and drainage Mulberry trees are hi wet crops. According to the rainfall, it is prone to drought in July and August each year. At this time, when the shoots grow vigorously after the summer harvest of Mulberry tree, more water is needed, if 8-10 days. If it does not rain, it should be irrigated. You can ditch and divert water from the mulberry garden, or dig a hole in the mulberry tree to irrigate it. After irrigating, the wet soil layer is required to be about 45 cm. In rainy seasons, drains should be cleared and drained.
4, timely cultivator weeding cultivator weeding can be combined with fertilization, irrigation, three or four times a year. The first time after the spring was opened, the mulberry was germinated and the overwintering weeds were removed. The second time after the summer harvest, we combine cultivator and weeding to apply summer fertilizer. The third time before mid-August, when the weeds have not yet been seeded, the weeds will be removed in a timely manner and can be combined with irrigation. The fourth time after mulberry defoliation, combined with winter fertilizer.
5. Correct cutting in warm and rainy areas, the spring silkworm silkworm period to pick leaf, edge cutting, known as summer cut. Please do not delay the summer harvest so as not to affect the yield of autumn leaves. In the cold mountainous regions, the mulberry grows for a short period of time and can be spring-cut to extend the growth time of new mulberry trees in the year. Autumn and winter attention to cutting tip, cut off after the bud should be sparse, fifth instar silkworm leaves with attention before picking the core. In addition, we must strengthen the prevention and control of mulberry pests and diseases.
1. Mulberry trees should be planted in close to 800-1000 plants per mu with a spacing of about 1.4 meters and a plant spacing of about 0.5 meters. A tree with less than two layers of stems should be cultivated.
2. Reasonable fertilization in the mulberry garden Each picking 50 kg of mulberry leaves needs to supply mulberry trees with 0.75 kg of pure nitrogen fertilizer, 0.3 kg of phosphate fertilizer and 0.45 kg of potash fertilizer. If mulberry mulberry leaves produce 1500 kilograms, 22.5 kilograms of nitrogen fertilizer, 8.5 kilograms of phosphate fertilizer, and 13 kilograms of potash fertilizer should be applied, which translates into about 4,500 kilograms of manure. Fertilizer can be applied in 4 separate seasons. Spring fertilizer was applied in March, mainly based on available nitrogen fertilizer. Summer fertilizer is applied after the summer harvest, and can be divided into 2 times. The first time in early June, the second time in early July, a total of 1,500 to 2,000 kilograms of manure urine is administered twice. Autumn fertilizer is applied in mid-August. Each mulberry mulberry garden uses 15 kg of urea. The winter fertilizer is applied in combination with winter plowing after mulberry defoliation. No matter what kind of fertilizer is applied, the ditch or digging hole should be applied, and the soil should be covered. Mulberry gardens should promote a variety of green manures.
3. Timely irrigation and drainage Mulberry trees are hi wet crops. According to the rainfall, it is prone to drought in July and August each year. At this time, when the shoots grow vigorously after the summer harvest of Mulberry tree, more water is needed, if 8-10 days. If it does not rain, it should be irrigated. You can ditch and divert water from the mulberry garden, or dig a hole in the mulberry tree to irrigate it. After irrigating, the wet soil layer is required to be about 45 cm. In rainy seasons, drains should be cleared and drained.
4, timely cultivator weeding cultivator weeding can be combined with fertilization, irrigation, three or four times a year. The first time after the spring was opened, the mulberry was germinated and the overwintering weeds were removed. The second time after the summer harvest, we combine cultivator and weeding to apply summer fertilizer. The third time before mid-August, when the weeds have not yet been seeded, the weeds will be removed in a timely manner and can be combined with irrigation. The fourth time after mulberry defoliation, combined with winter fertilizer.
5. Correct cutting in warm and rainy areas, the spring silkworm silkworm period to pick leaf, edge cutting, known as summer cut. Please do not delay the summer harvest so as not to affect the yield of autumn leaves. In the cold mountainous regions, the mulberry grows for a short period of time and can be spring-cut to extend the growth time of new mulberry trees in the year. Autumn and winter attention to cutting tip, cut off after the bud should be sparse, fifth instar silkworm leaves with attention before picking the core. In addition, we must strengthen the prevention and control of mulberry pests and diseases.
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