The Causes and Control Measures of Pumpkin Squash
First, the cause of melon
1. Due to poor pollination or lack of pollination, auxin cannot be produced in the ovary, resulting in abnormal growth of embryos and endosperm. In addition, nutrients from vegetative growth and nutrient supply of female flowers are insufficient, and the auxin content of the ovary is reduced. Solid and melon.
2. The temperature is too high, the daytime is higher than 35°C, the nighttime is higher than 20°C, or the temperature is too low, the daytime is lower than 20°C, and the nighttime is lower than 10°C, the malnutrition will be caused due to the respiratory consumption or the impaired absorption ability of the roots. melon.
3. In the flowering period, in the event of continuous cloudy or rainy weather, photosynthesis is affected. The female flowers of the zucchini sensitive to light response may be deficient in ovaries due to insufficient light.
4. When the density is high, and the leaf area index reaches 4 or more, the light permeability and air permeability are reduced, the photosynthetic efficiency is not high, and the consumption is increased. When there are more than 3,000 plants per mu, the leaves are shaded and the rate of the melons is increased.
5. If the supply of fertilizer and water is insufficient, the root system cannot develop very well, and the leaves are small and yellow, affecting photosynthesis, causing insufficient supply of nutrients for female flowers; if there is too much fertilizer, especially nitrogen, the plants are too long and the air humidity is high. Diseases will also increase the rate of chew.
6. Powdery mildew, gray mold, downy mildew and aphids directly harm the leaves and young stems, resulting in poor growth and melons.
7. If you do not harvest timely melon, malformed melon, and melon melon, the nutrient supply of newly opened female flowers will be poor and the melons will be supplied. If all the semi-finished products are harvested, only the open and unopened female flowers will remain on the plant. Due to the apical dominance of nutrients supplying plant growth, resulting in leggy, it also leads to severe melons.
Second, prevention and control measures
1. Measures cultivation. The summer temperature of Zucchini growing around 25 °C, the night temperature around 15 °C, is conducive to the manufacture, transportation and accumulation of carbohydrates, can greatly reduce the melon.
2. In order to make up for the lack of light, it is advisable to plant about 2000 acres. In the event of continuous rainy days, foliar spray of sugar nitrogen (0.2% potassium dihydrogen phosphate + 1% glucose + 0.5% urea) can improve the nutritional status of the plant.
3. Scientific fertilizer management, early spring cultivation, pay attention to rain cover film to prevent heavy showers.
4. Timely harvesting, early picking deformed melons, falling melons, timely collection of goods melon, do not rush to pick the semi-finished goods melon.
5. Chemical treatment, in the 2-3 days after flowering with 100-500 mg / kg of gibberellic acid, 100-200 mg / kg of anti-droplet spray, can make small melon grow faster, not easy to melon.
1. Due to poor pollination or lack of pollination, auxin cannot be produced in the ovary, resulting in abnormal growth of embryos and endosperm. In addition, nutrients from vegetative growth and nutrient supply of female flowers are insufficient, and the auxin content of the ovary is reduced. Solid and melon.
2. The temperature is too high, the daytime is higher than 35°C, the nighttime is higher than 20°C, or the temperature is too low, the daytime is lower than 20°C, and the nighttime is lower than 10°C, the malnutrition will be caused due to the respiratory consumption or the impaired absorption ability of the roots. melon.
3. In the flowering period, in the event of continuous cloudy or rainy weather, photosynthesis is affected. The female flowers of the zucchini sensitive to light response may be deficient in ovaries due to insufficient light.
4. When the density is high, and the leaf area index reaches 4 or more, the light permeability and air permeability are reduced, the photosynthetic efficiency is not high, and the consumption is increased. When there are more than 3,000 plants per mu, the leaves are shaded and the rate of the melons is increased.
5. If the supply of fertilizer and water is insufficient, the root system cannot develop very well, and the leaves are small and yellow, affecting photosynthesis, causing insufficient supply of nutrients for female flowers; if there is too much fertilizer, especially nitrogen, the plants are too long and the air humidity is high. Diseases will also increase the rate of chew.
6. Powdery mildew, gray mold, downy mildew and aphids directly harm the leaves and young stems, resulting in poor growth and melons.
7. If you do not harvest timely melon, malformed melon, and melon melon, the nutrient supply of newly opened female flowers will be poor and the melons will be supplied. If all the semi-finished products are harvested, only the open and unopened female flowers will remain on the plant. Due to the apical dominance of nutrients supplying plant growth, resulting in leggy, it also leads to severe melons.
Second, prevention and control measures
1. Measures cultivation. The summer temperature of Zucchini growing around 25 °C, the night temperature around 15 °C, is conducive to the manufacture, transportation and accumulation of carbohydrates, can greatly reduce the melon.
2. In order to make up for the lack of light, it is advisable to plant about 2000 acres. In the event of continuous rainy days, foliar spray of sugar nitrogen (0.2% potassium dihydrogen phosphate + 1% glucose + 0.5% urea) can improve the nutritional status of the plant.
3. Scientific fertilizer management, early spring cultivation, pay attention to rain cover film to prevent heavy showers.
4. Timely harvesting, early picking deformed melons, falling melons, timely collection of goods melon, do not rush to pick the semi-finished goods melon.
5. Chemical treatment, in the 2-3 days after flowering with 100-500 mg / kg of gibberellic acid, 100-200 mg / kg of anti-droplet spray, can make small melon grow faster, not easy to melon.
Hopsital Management Wired Emergency Call System is an indispensable important part in hospital digitization construction,which not only provides the powerful communication among doctors, nurses,and patients,but also creatively offers the new functions of voice reminding, information issuing, information collection, information process, and etc, stretched hospital information system(His) to wards. This system has truly achieved a leap of nursing quality besides the greatly decrease of the work intensity of nursing staff.
Hospital Ward Nursing System
Hospital Ward Nursing System,Wired Nurse Call Bell System,Nurse Call Bell System,Ward Nurse Call Bell System
Hunan Eter Electronic Medical Project Stock Co., Ltd. , https://www.centralgas.be