Recently, the weather is changing and the temperature is rising rapidly. Many vegetable farmers will take advantage of sunny weather to quickly increase the temperature in the shed and promote the rapid growth of vegetables. In fact, the increase in temperature can indeed promote the growth of vegetables, but if the temperature rises too quickly in a short time, it will cause many adverse effects on the growth of vegetables. Disclaimer: Some articles of this website are transferred from the Internet. If the legal rights of third parties are involved, please inform this website for processing. phone Lithium Basic Information
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Unbalanced growth of the upper and lower parts of the plant. In the current shed indoor, the temperature of the shed rises fast during the day and the ground temperature rises slowly. If the temperature is raised too high and too fast at one time during the day, it is easy to cause the above-ground vegetables to grow too fast, and the plant nutrients tend to move toward the ground The ground temperature rises slowly, and there is not enough nutrient distribution, which makes the root system weak and the plants are unbalanced above and below the ground. With the increase in the amount of fruit, the weaker root system cannot absorb enough nutrients to supply the whole plant, which is easy to cause The plant is prematurely aging.
The temperature in the shed is too high. Suddenly amplifying the wind will easily cause the skin and crack melons. Due to the large temperature difference between day and night, the humidity in the shed is large at night, and there will be dew on the stems and leaves of the plants. After the temperature in the shed increases, the wind is suddenly too large , It is easy to cause small cracks to form on the surface of the plant, resulting in fruit cracking. At present, the watermelon in the early spring will enter the swollen melon period. It is recommended that the temperature in the daytime be 30℃～32℃, and the night temperature is 18℃～20℃. The temperature is too high for a long time during the day, so that the watermelon grows too fast. After the temperature drops at night, the surface temperature of the melon skin decreases and the growth rate slows down, resulting in inconsistent growth rates of the two and prone to split melons.
Jiuyinshaqing, prone to acute wilting. After Jiuyinshaqing, the plants are starving, the ground temperature is low, the root system is poor in activity, the plant leaves have a large amount of transpiration, the roots have insufficient water absorption capacity, and the water supply and demand are unbalanced, resulting in acute leaf wilting. If effective mitigation measures cannot be taken in time, it will further develop into permanent wilting, causing the stems and leaves to dry up and even the plants to die.
High temperature for a long time will cause poor flower bud differentiation. Vegetables have suitable growth temperatures. Excessively high temperature will affect the flower bud differentiation. For example, the male flowers of melon vegetables will increase, the female flowers will decrease, or the flower bud differentiation will be deformed, resulting in small flowers and small fruits. , Or even the situation of falling flowers and fruits. High temperature will exacerbate respiration and consume a lot of nutrients, at the same time it will inhibit the continuation of photosynthesis and reduce the synthesis of organic nutrients, so that the plant's own nutrient consumption is greater than the synthesis, so the fruit does not get enough nutrition and does not grow, hollow or even deformed. Reduce overall output.
High temperature affects the color transformation of tomato, color pepper, eggplant and other eggplant fruits. When the color of tomato is changed, whether the lycopene inside the fruit can be effectively synthesized is critical. Lycopene can grow rapidly at about 24℃, which is conducive to the smooth color change of the fruit. When the temperature exceeds 32℃, it will seriously hinder the production of lycopene and make the fruit show uneven color transfer or color irregularity.
High temperature is also conducive to the occurrence of viral diseases. The high temperature in the shed will put the vegetables in a kind of adversity, which is not conducive to the cultivation of strong trees, so it is easy to be infected with various diseases. Every year in April and May, the virus disease is high. In fine weather, the temperature of the shed is rapidly increased. In this state, the growth of the originally strong plant is suppressed. At this time, the virus disease in the suppressed state will show a dominant state, and the plant will show symptoms of dominant virus disease such as mosaic, fern leaves, and stripe.
Therefore, it is necessary to adjust the growth environment of suitable vegetables in the shed, and it cannot be managed in a fixed way. It should pay close attention to the weather changes and adjust it in a timely manner through ventilation and thermal insulation. Even during the high temperature period in the afternoon, proper shading measures should be taken Avoid plants from being damaged by short-term high temperature and strong light.
CAS: 7439-93-2
MF: Li
MW: 6.94
EINECS: 231-102-5
Mol File: 7439-93-2.mol
Melting point 180 °C(lit.)
Boiling point 1342 °C(lit.)
density 0.534 g/mL at 25 °C(lit.)
vapor pressure 1 hPa (723 °C)
storage temp. water-free area
form wire
Specific Gravity 0.534
color Silvery
Water Solubility REACTS
Sensitive air sensitive, moisture sensitive
Stability: Stability Stable, but reacts violently with water. Store under oil.