Cucumber has the characteristics of warm water, large water demand and poor drought tolerance. It ensures the normal growth and development of cucumber plants at low temperature in order to ensure the temperature required for plant growth in low temperature environment. In order to obtain high yield, it is also necessary to accurately grasp the correct irrigation technique of cucumber at different growth stages. According to the summary of practical experience, the irrigation techniques of greenhouse cucumbers are as follows: First, watering according to the characteristics of the times. The wintering cucumber cultivated in the winter-heated greenhouse is generally at the end of October. At this time, in addition to pouring the planted water and timely cultivating and cultivating, it is generally not necessary to re-water the first melon, and it can be covered after pouring the fruit water. The mulch film is moisturized, and if necessary, the water is poured under the membrane to avoid lowering the ground temperature. After the weather turns warmer, increase the amount of water to meet the growth and development of the fruit. Greenhouse cucumbers cultivated in early spring should be watered in time to meet their water needs. Fourth, look at the growth of the situation. The plant is dark green, the leaves are shiny, green and flat, and the heart leaves are stretched, which is an even and appropriate expression of moisture. If the heart leaves are not shrinking, the leaves are dark green, and the mild leaves are drooping on sunny days, and the water is required to be replenished in time. If the heart leaves are over-expanded, the leaves are large and thin, and the leaves are spit with too much water, which is a manifestation of excessive water, and should be controlled by water. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone In order to keep melanin from appearing in the skin, people have thought of various ways. Whitening ingredient, Skin whitening, Skin whitening material, Whitening materials,Whitening effect Xi'an Day Natural Inc. , https://www.dayqc.com
Second, watering according to the characteristics of different growth periods. Under normal circumstances, the cucumber should be planted while watering, and then watering the seedling water for 3 to 5 days after pouring the water, until the young melon grows to 15 to 28 cm, it is necessary to fill the melon water in time. After sitting on the cucumber, pour it again. As a result, the early colonization was small, the leaf transpiration was small, the number of fruits was small, and the ventilation was small. Generally, water could be poured for 7 to 10 days (the amount of water should be small). Later, with the growth and development of the plant, the number of sitting melons increased, the ventilation increased, and the transpiration increased. The number of watering intervals should be shortened and the amount of watering should be increased. Keep the soil dry and wet (mainly wet), generally Water can be poured for 5 to 7 days, and the soil should be kept moist during the harvesting period to increase the weight of the single melon.
Third, the watering time of the day in the greenhouse. During the growth period, you should choose sunny watering in the morning. After watering, it should be ventilated and drained. It is not suitable to water in the afternoon, evening or rainy days. Otherwise, the humidity in the shed will be too large, causing downy mildew and other diseases. It is not suitable for watering at noon. In order to avoid the high temperature watering affecting the physiological functions of the root system; the weather is hot in the middle and late stages, and the greenhouse can be ventilated day and night. Water should be watered in the morning and evening to cool down.
5. Irrigation of cucumber during the late growth period. At the later stage of cucumber production, it has experienced more than 100 days of growth. At this time, the plants have become aging. If you want to continue to have better yield and benefit, you must insist on continuing irrigation and fertilization, and strengthen the implementation of comprehensive technical measures. . At this time, the amount of irrigation should be controlled to achieve 7 days of water.
First, because melanin is produced by tyrosinase, we can pull the plug by reducing the tyrosinase and stopping melanin production. Daynatural is committed to research and development of various whitening raw materials. Whitening ingredients include vitamin C and its derivatives, nicotinamide, arbutin. Daynatural produces arbutin, a whitening ingredient that has been used for many years. This ingredient was once so high that it was once added to various whitening products. It can also inhibit the activity of inhibiting tyrosinase and prevent the formation of melanin, thereby reducing skin pigmentation, thinning spots, and preventing the formation of spots. All of the above whitening ingredients can prevent skin aging and promote cell and tissue regeneration.
Greenhouse cucumber irrigation has skills