During the period of potato block enlargement, the growth center of sweet potato stems from the growth of stems and leaves on the ground to the enlargement of the tuber, and the weight gain of the tuber during this period accounts for 60% to 70% of the whole weight, which is a critical period for the high yield of sweet potato. Therefore, it should be strengthened. Period of cultivation management.
First, chase cracking fertilizer to general summer to white dew this time the surface began to crack, at this time part of the root absorption capacity of nutrients weakened, in order to maintain a reasonable supply of nutrients, and prevent premature aging of leaves, cracking fertilizer should be applied. Each mus of 4 kg of urea plus 5 kg of potassium sulfate applied to 100 kg of water.
Second, increase the application of foliar fertilizer roots to absorb nutrients weakened during this period can be sprayed foliar fertilizer to make up for lack of nutrients. Generally, 2% to 3% of potassium sulfate solution, 0.2% of potassium dihydrogen phosphate solution are used, and sprayed plant growth regulators may be appropriately added. Foliar spraying began in late August and sprayed once every 10 days.
Third, it is forbidden to turn vines because turning vines will not only damage the leaves, affect photosynthesis, but also cause vine damage. For potato fields that are more prosperous, they can use the method of “playing vines†to control their length, and they can also moderately “supply vinesâ€, that is, to gently lift up the yam, cut the roots of the middle part of the yam, and reduce the fibrous roots. Generation, not only damage the leaves, but also reduce the trend of potato growth, promote the expansion of potato block.
Fourth, drought-resistant sweet potato block expansion of sweet potato, such as field drought, should be timely watering, to ensure the development of potato block on the need for water. Can not just think that watering more easily lead to the formation of potato growth, and not consider the potato block expansion period of the water requirement. According to the practice of planting for several years, if a potato field that is too dry during the expansion period tends to produce high yields, in the event of more rainfall, drainage should be taken to prevent the water content in the fields from being excessively high and affect the quality of the tubers. Form disease.
V. Pest Control In this period, leaf roller moths are prone to damage. When leaf roller moths occur in large quantities, they can eat plant leaves. Therefore, when the larvae have not been rolled before the 3rd instar stage, use 2.5% Kung Fu EC 5000 times solution, which can also be used for high performance cypermethrin. Prevention. Spraying should be done after 5:00 PM on sunny days, and another spray should be sprayed after 3 to 5 days.
6. Harvested sweet potatoes in a timely manner No obvious maturation period. When the average temperature drops to 15°C, the roots stop growing. Generally, they should be harvested before the frost falls (the temperature is not lower than 12°C). The tubers will suffer cold temperature damage later and reduce the quality and tolerance of the tubers. Storage capacity.
First, chase cracking fertilizer to general summer to white dew this time the surface began to crack, at this time part of the root absorption capacity of nutrients weakened, in order to maintain a reasonable supply of nutrients, and prevent premature aging of leaves, cracking fertilizer should be applied. Each mus of 4 kg of urea plus 5 kg of potassium sulfate applied to 100 kg of water.
Second, increase the application of foliar fertilizer roots to absorb nutrients weakened during this period can be sprayed foliar fertilizer to make up for lack of nutrients. Generally, 2% to 3% of potassium sulfate solution, 0.2% of potassium dihydrogen phosphate solution are used, and sprayed plant growth regulators may be appropriately added. Foliar spraying began in late August and sprayed once every 10 days.
Third, it is forbidden to turn vines because turning vines will not only damage the leaves, affect photosynthesis, but also cause vine damage. For potato fields that are more prosperous, they can use the method of “playing vines†to control their length, and they can also moderately “supply vinesâ€, that is, to gently lift up the yam, cut the roots of the middle part of the yam, and reduce the fibrous roots. Generation, not only damage the leaves, but also reduce the trend of potato growth, promote the expansion of potato block.
Fourth, drought-resistant sweet potato block expansion of sweet potato, such as field drought, should be timely watering, to ensure the development of potato block on the need for water. Can not just think that watering more easily lead to the formation of potato growth, and not consider the potato block expansion period of the water requirement. According to the practice of planting for several years, if a potato field that is too dry during the expansion period tends to produce high yields, in the event of more rainfall, drainage should be taken to prevent the water content in the fields from being excessively high and affect the quality of the tubers. Form disease.
V. Pest Control In this period, leaf roller moths are prone to damage. When leaf roller moths occur in large quantities, they can eat plant leaves. Therefore, when the larvae have not been rolled before the 3rd instar stage, use 2.5% Kung Fu EC 5000 times solution, which can also be used for high performance cypermethrin. Prevention. Spraying should be done after 5:00 PM on sunny days, and another spray should be sprayed after 3 to 5 days.
6. Harvested sweet potatoes in a timely manner No obvious maturation period. When the average temperature drops to 15°C, the roots stop growing. Generally, they should be harvested before the frost falls (the temperature is not lower than 12°C). The tubers will suffer cold temperature damage later and reduce the quality and tolerance of the tubers. Storage capacity.
The yellow mealworm is not only rich in protein, fat, polysaccharid and other organic macromolecular nutrients, but also rich in phosphorus, potassium, iron, sodium, aluminum and other trace elements. For every 100g of the yellow mealworm larvae, the protein content of dry powder is between 48% and 54%, the fat content is between 28% and 41%, and the contents of vitamin E, B1 and B2 are also high. Therefore, the yellow mealworm can provide high quality protein for the shrimp, make the shrimp high in nutrition and delicious.
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