Tomatoes need to pay attention to fruit thinning and fruit retention during the fruit expansion period, mainly to better reduce the competition of fruit nutrients, resulting in fruit nutrient waste. The fruit thinning is divided into several periods. The first ear fruit expansion period is more important. The following small series tells about some management and attention points. Ensure that the first ear of the tomato leaves 2-3 fruits, and the fruit per ear The amount is 4, the sooner the fruit is, the better, reducing the waste of nutrients. In time, the old leaves under the first ear of fruit are destroyed. The first ear is fruit-expanding, and a complete leaf can be left under the fruit to increase the ventilation and light transmission to prevent disease. Timely thinning flowers and thinning fruits, especially fruit thinning, should be removed in time before the fruit grows to 2cm. It should not be too late to prevent the loss of nutrients. In this period, the tomato should adopt medium-high temperature management to maintain the temperature during the day. According to the growth of the plant, properly control or maintain the temperature at night, so that the scorpion can neither grow long nor maintain its growth. Generally, it is about 28 °C during the day and 10-12 °C during the night. At the same time, according to the weather conditions, the amount of air release should be appropriately increased to promote gas exchange in the greenhouse and increase the accumulation of nutrients in the tomato. The main points of management of tomato fruiting period: ensure that the first fruit of tomato is 2-3 fruits, and the amount of fruit left per panicle is 4, the sooner the fruit is, the better, reducing the waste of nutrients. The old leaves under the first ear are cut off in time, and the first ear is fruit-expanding, leaving a complete leaf under the fruit. The temperature in the shed is generally about 28 ° C during the day and 10-12 ° C during the night. After pulling the grasshopper in the morning, release the wind in the wind for 10-15 minutes to eliminate the moisture in the shed. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
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1. Solar panel: The solar panel is an important part of the mobile phone software of the solar power generation system, and also a part of the practical value of the mobile phone software of the solar power generation system. Its function is to convert the professional ability of radioactive substances in natural light into electric energy, or send them to storage batteries, or promote load work.
2. Solar controller: The solar controller is used to control the operation of mobile phone software in all systems, and has the functions of overcharge protection and overcharge maintenance for the battery. In areas with large temperature difference, the qualified controller shall also have the function of temperature compensation. In the mobile phone software of the solar road lamp system, there must be light control switch and time control solar road lamp operation.
3. Battery: generally valve controlled maintenance free lead-acid battery. In the mobile phone software of small and medium-sized systems, in cold weather areas, a solar gel battery needs to be configured, which can be used at low temperatures, with high efficiency and is not vulnerable to major damage. Its function is to store the electric energy of the solar panel when the sun shines, and then release it under certain conditions.
4. Variable frequency power supply: split wave type and sine wave type. In order to provide power for 220VAC electrical products, it is necessary to convert the DC stabilized voltage power supply in the solar power generation system software into AC circuit energy, so DC AC variable frequency power supply is required.