There are four fears of tomato seedlings in summer: one is afraid of exposure to the sun, two is afraid of rain, three is afraid of high temperature, and four is afraid of excessive growth. In order to cultivate strong seedlings, the following measures must be taken:
Choose a dry and ventilated vegetable garden as a seedbed and set up an awning. The seedbed is about 1 meter wide. The bed awning must have a layer of plastic film to prevent rainwater from entering. The flower blinds on the film can transmit light and shade. When it rains, cover the awning with a film to prevent the seedlings from being exposed to hot rain. Use curtains to shade the seedlings at noon on sunny and hot days to prevent the seedlings from being exposed to the hot sun.
The seedling age should be short, usually 30 to 35 days, and seedlings should be grown once without dividing the seedlings to prevent infection of the roots from the transplanted seedlings.
The delayed autumn tomatoes in the greenhouse are cultivated during the hot and rainy season in summer, and the most serious diseases are more serious. You can spray 500 times chlorothalonil or antitoxin alum for control during the nursery period.
In the later stage, control watering and prevent rainwater from irrigating, causing the seedlings to grow excessively.
To prevent the seedlings from growing excessively, spray the leaves with chlormequat 0.1% to 0.15% for a total of 2 sprays to make the seedlings strong and strong.
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NVR Kit China's domestic level
China Telecom's Global Eye and the former China Netcom have developed remote video monitoring in conditional households. For example, the wide view video monitoring business has been launched in China Netcom's Shanxi, Shandong, Jilin, Zhejiang, Henan and other provincial companies in the early stage, and has been widely welcomed by customers. The wide view business has developed rapidly. In the first half of this year, only Hubei Netcom's "wide view - God's Eye" business has developed more than 500 households. With the rapid development of family information technology, users' demand for family security is becoming stronger and stronger, and the broad horizon will maintain rapid development. China Mobile is also developing mobile MMS monitoring represented by "Handyantong", and 3G video monitoring is also being tested and commercially tested. It is difficult to develop and promote home video surveillance because of the huge data and signal flow relying on the network and the need to deploy home gateways and cameras.
Video monitoring is mainly used in the communities closely connected with families in the industry field, but it is still less used for home monitoring. Under the guidance of the policy of safe cities and safe families, the domestic family monitoring will begin to rise with the continuous improvement of family network environment, the improvement of users' consumption ability, the growth of security awareness, and the increase of independent living families. The integrated video monitoring that integrates limited, wireless access and linkage alarm will become a development trend. Full service operation has arrived. Operators will certainly provide users with wired and wireless diversified technical monitoring means. Through business integration, they will bring users endless monitoring services. Monitoring realizes the discovery and prevention of family safety, and also reflects family care. In addition, efforts should be made to solve the problem of security. Therefore, family monitoring needs to gradually increase some new functions and applications such as linkage alarm and security services, such as emergency help, interaction with public security, medical care, housekeeping, and calling.
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