Cucumbers are becoming more and more popular in the market. Many farmers choose to grow cucumbers. However, in the near future, farmers have reacted. Cucumber has a phenomenon. Cucumbers are chlorotic and yellow, leaves are soft and withered, growth points are shrinking, and tendrils are thin and curly. The roots turn yellow, no new roots are produced, the melons are swollen and slow, and the deformed melons are many. Many farmers think that this is the cause of cucumber disease or lack of fertilizer. In fact, this is the premature aging of cucumber, which is premature aging. So what is the cause of premature aging in cucumber? How to prevent and remedy it? 1. The cause of premature aging in cucumber (1) Variety aging The variety selected by the growers has aged. (2) Colonization of weak seedlings When transplanting, the growers planted weak seedlings with weak roots or poor graft quality. (3) Premature colonization For example, in the solar greenhouse, the winter and spring cucumbers are planted too early (from late September to early October), plus the high temperature in the early period, the plant grows vigorously, or the temperature is high after planting, and the mulching film is early, the seedlings are not good, to the middle and late stages. Both are prone to premature aging. (4) Premature watering and top dressing After planting, there is too much watering, there is no good control of water seedlings, or watering and topdressing is too early, resulting in poor root development, or excessive application of nitrogen fertilizer in the early stage, resulting in long seedlings. (5) Too many knots The excessive number of early melons caused the plants to decay prematurely. (6) Poor management In a long period of time, the temperature inside the protection ground is low (especially less than 10 degrees in the middle of the night), or the water is poured in the low temperature season and the water temperature is low, or after entering the melon period, the water shortage is lack of fertilizer, or the pests harm. (7) Other reasons Abuse of plant growth regulators, or phytotoxicity, fertilizer damage, etc., or even rainy days and snowfall days. 2. Prevention and treatment measures for premature aging of cucumber (1) Choosing the right variety and sowing date According to the local climatic conditions and cultivation methods, choose the appropriate variety and sowing date. For example, in the greenhouse, the winter and spring cucumbers should be selected from the excellent thorn system, and seedlings should be planted in the middle of October to the beginning of November. (2) Cultivate strong seedlings Strengthen the management of the seedbed period and cultivate the seedlings with no disease and insects at the appropriate age. (3) Strengthen field management It is recommended that growers adopt soil testing and fertilization techniques to rationally apply nitrogen fertilizer. If the temperature is high after planting, the film cover time can be postponed to promote seedlings; or according to the external natural temperature changes, the temperature and ground temperature in the protected area can be adjusted to meet the growth demand of cucumber. For example, in the low temperature and low temperature season, low temperature management measures should be adopted to protect the normal growth of the plant; or in the melon harvesting period, the water and fertilizer management should be strengthened to prevent the plants from being deficient in water and fat; or to prevent disease and leaf. (4) Picking melons and pruning in time Timely harvesting and growing into melons. In the low temperature and low temperature season, the melon can be appropriately diluted. Timely removal of old leaves, diseased leaves, side branches, tendrils, male flowers, etc., to reduce the burden on plants. (5) Timely topping or falling It can be topped (above) when the plant has 23-25 ​​leaves, or it can be dropped as appropriate. For example, the ground mulch can be broken on the ridge from April to May, and the shallow ditch is 5 cm deep, 5 cm wide and 15-20 cm long. At the 120 cm below the growth point of the plant, two strong and disease-free spots are selected. The leaf section is buried in the shallow ditch, the soil is compacted, and then watered. After 15 days, 10 kg of urea is applied every 667 meters and watered. Or digging a soil hole 5-7 cm deep and 10-15 cm in diameter around the plant, and then using the 0.1% potassium permanganate solution for the 3-5 knots of the aboveground part, or (50%) carbendazim WP. After 800 times of liquid brushing and disinfection, the plate is placed in the hole, and then the soil is watered. 3. Remedy for premature aging of cucumber (1) Moderate picking of leaves If the plant is found to have signs of premature aging, the organs such as melons and leaves on the plant can be removed. (2) Take measures for symptomatic Such as improving soil conditions, promoting root development, or timely application of quick-acting fertilizer (urea, or diammonium phosphate), and watering, or spraying 0.1% ~ 0.2% potassium dihydrogen phosphate solution on the foliage. The above is the cause of premature aging of cucumber and preventive and remedial measures. In the process of planting cucumber, many people think that this symptom does not matter, and even some farmers will think that it is a disease and other problems, so farmers must plant when they must Pay attention to management, early detection and prevention of cucumber premature aging. For the wonderful pictures and hot comments about cucumber premature aging, you may be interested in the following recommended content, welcome to read. China Extract Powder For Use As Dietary Supplement Extract Powder, Extract Powder Manufacturer Shaanxi Kang New Pharmaceutical co., Ltd. , https://www.bodybuildingoil.com
Causes of premature aging of cucumber and preventive measures
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