Shed room vegetables, fertilizer and gas

In winter and spring, greenhouses have long closed periods. Some vegetable farmers, in order to promote the growth of vegetables and the enlargement of fruits, apply a certain amount of fertilizer, such as raw chicken manure and compound fertilizers, and some nitrogen-containing fertilizers when watering. If you do not pay attention to ventilation after fertilization, sheds can easily accumulate harmful gases and cause gas damage to vegetables. Therefore, in the winter and spring even cloudy days, care should be taken to avoid the use of raw chicken manure, fertilizer and other fertilizers, biochemical fertilizer can be applied to strengthen the roots of conservation. In addition, when it is necessary to top-dress the vegetables during the latter part of the growing season, you can choose to have a fine sunny morning and catch a small breeze after dressing. Once gas harm occurs, timely remedial measures must be taken: First, timely soil loosening and ventilation should be strengthened so that harmful gases can be emitted to the shed as soon as possible, and winds should be properly ventilated even on cloudy days. Large and noon should be released sooner or later, or at high temperatures. When it is released. The second is to spray plant growth regulators such as cytokinin and adenosine to promote the recovery of damaged crops as soon as possible. Third, try to avoid the application of unrefined chicken manure or fertilizers with high nitrogen content before closing the shed for a long time.

Video Door Phones

ACTOP Video Door Phones is a high tech, electronic security product that allows you to see and speak to visitors before opening the door to make your home safer.If you would like to know who`s at your door from anywhere before you open it, video door phones are your good security solution. Widely used in homes, apartments and office buildings.The IP video door phone is with easy installation & affordable price and ACTOP Video Door Phone is with FCC,CE and RoHS authority certifications.

Mainly are 3 seris video door phones:
1. WiFi Video Door Phone
2. 4 Wire Video Door Phone

3. IP Video Door Phone

About ACTOP factory:
1. Show room and Office
2. Workshop
3. Certifications

4. Exhibition

Video Door Phones,Video Door Phone,Video Door Phone Cable,Wireless Video Door Phone,Apartment Video Door Phone

Shenzhen Zhuohao Intelligent Electronic Development Co., Ltd. , https://www.szactop-smart.com