High temperature and high humidity are two important environmental factors that restrict the normal growth of vegetables in summer. They can easily cause roots, leggy and other undesirable phenomena, as well as create conditions for the invasion and occurrence of pests and diseases. Sustained high temperatures and continuous rainy days pose a greater threat to the young seedlings cultivated in the autumn. Continuous high temperature weather not only affects the normal growth of seedlings, causes abnormal growth conditions such as wilting, growth stagnation, etc., but also tends to affect the flower bud differentiation of seedlings, resulting in a higher proportion of early flowering, fruit drop, and deformed fruit, leading to an earlier yield. Greatly reduced. Under high humidity conditions, vegetable plants are in a water-saturated supply state and prone to leggy. In addition, the moisture in the soil is in a state of saturation for a long period of time, which makes it easy for the root system to be in an oxygen-deficient state, resulting in rooting of the roots and infestation of soil-borne diseases, leading to the emergence of "dead trees." In high temperature and high humidity weather, vegetables can be managed as follows. I. Solanaceous vegetables: Solanaceous vegetables are prone to leggy and seedling disease (flood damping, damping-off and stem rot) under high temperature and high humidity conditions. In the course of management, control of temperature and water should be done, and attention should be paid to good shade nets and insect nets. After planting, pay attention to control the amount of watering, watering to do a small water pouring, see dry see wet, to prevent excessive humidity, infection seedling disease. In the event of seedling stage disease, it can be treated with 500 mg of hymexazol or 600 times of root rot, and rooting and strong seedlings; it can also be treated by the disease-prevention type Jianzhibao, with a dose of 40-60 kg per mu. . Second, the melon vegetables: melon vegetables in this period of management, mainly to control the growth and increase production. In the management process, attention is paid to temperature control and water control to prevent melons from prolonging and causing melons under high temperature and high humidity conditions. At night, night temperature control should be strengthened, ventilation should be increased, and nutrient conversion and transportation should be strengthened. When fertilizers are applied, pay attention to potash fertilizer and increase yield. Third, leafy vegetables: open-air cultivation of leafy vegetables, to do rain and timely harvest. During the period of concentrated rainfall, pay attention to irrigation and flood prevention to prevent water from causing rooting. When harvesting standards are met, harvesting must be carried out in time to prevent rot in the event of rain. Â Injection Device
Syringes can also call Disposable Medical Supplies, Disposable Syringe With Needle and Plastic Needle Tube such as some scientific instruments in chromatography to inject through the rubber septum. Injecting gas into a blood vessel will cause an air embolism. The way to remove air from the syringe to avoid embolism is to turn the syringe upside down, tap it lightly, and squeeze out a little bit of fluid before injecting into the bloodstream.
In some cases where accuracy is not the primary concern of germs, such as quantitative chemical analysis, glass syringes are still used due to the small error of the glass syringe and the smooth movement of the push rod.
You can also inject some of the juices into meat with a syringe to improve taste and texture while cooking, or into pastries when baking. Syringes can also fill ink cartridges with ink.
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