Summer sowing watermelon is a piece of watermelon planted before and after summer wheat harvest, from late May to early June. It is also known as watermelon. What should be paid attention to cultivation of summer sowing watermelon in open field, and the master of agricultural extension and senior agronomist Zhang Ligong should provide guidance for the majority of growers. Selection The fruiting season of summer sowing watermelon is in the season of high temperature and rainy season. Therefore, besides the requirement for strict selection of plots, the selection of plots should also pay attention to the selection of high topography, good irrigation and drainage conditions, deep soil and fertile sandy soil. Loam. Site preparation base fertilizer Due to the summer rainfall, it is easy to cause the loss of fertilizer and leaching. Therefore, the base fertilizer should be dominated by long-lasting organic fertilizer, and the amount should be sufficient. After the harvest of the former crop, deep plowing was immediately carried out. Use sorghum or small high ridge cultivation to facilitate drainage and flood prevention. Covering silver gray film Summer sowing watermelon during the birth of high temperature and rain, prone to a variety of diseases and insect pests, the characteristics are vulnerable to aphid damage. The use of silver-gray reflective mulching is an effective way to repel aphids and reduce the harm of viruses. In addition, it can stabilize soil moisture (both drought and flood), prevent soil compaction and reduce the loss of soil nutrients, improve plant illumination. Select the appropriate variety During the growth of summer sowing watermelon, the temperature is high, the rain is much, the air humidity is high, and it is easy to suffer the pest damage. Therefore, the requirements for varieties of watermelon cultivated in summer are relatively strict. It requires that the cultivated varieties must have the characteristics of disease resistance, moisture resistance, high temperature resistance, strong growth potential, and strong photosynthetic capacity. In general, disease-resistant, high-yield, and high-quality varieties introduced from the more rainy regions of the South have performed better during summer sowing. Sowing to live broadcast This watermelon is mainly broadcast live, generally sowed at the end of May in early June, 2 to 3 days before sowing soak germination, most seeds can be sown after dew. Seedlings should be checked every day after sowing, and the cotyledons should be promptly broken after the emergence of the cotyledons to prevent seedlings at high temperatures. The broken membrane should be careful not to make the break too large. You can use your fingers to burrow a hole about 2 cm in diameter to release the seedling. After the seedlings, the basement membrane of the seedling stem should be sealed with soil. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone
Access Control Keypad is a security product that can be connected to a lock and unlocked by swiping card, password, fingerprint, mobile phone, etc. Residents can connect the access control keypad to the electric lock, Magnetic lock , etc., and then control the door opening by access control keypad.
The access control keypad also plays a very important role in the whole intercom system. If there are multiple doors in the building and residents need to be controlled to open all doors. For this project only needs to use one main Video Intercom System in the main door. For example, there are two doors in the building.
We can offer you with two solution for this project:
1. Customers can use 2 sets Video Door Phone for two doors
2. Customers can use 1 set video door phone and 1 set access control keypad,one for mainly door and another one for side door or basement.
Usually many customers will choose to use the second one solution. Because it can save more money for the whole project to the greatest extent.
There are many different solutions for the connected access control keypad, which can be modern access control keypad, open the door with a password or swipe card, and some customers like to be more intelligent, that is remotely unlock, which can work together with the video door phone to remotely unlock two doors through the mobile phone APP.
The following is our access control keypad, which supports password and card swiping.
The following are its parameters for your reference:
1. metal shell, waterproof
2. Touch the button
3. 1000\4000 users
4. anti-flapping door
5.external card reader
We are a factory specializing in the production, manufacture and research and development of Access Control System for 11 years. If you want to know more about us, please send us an inquiry, we are very honored to share the catalogue and price with you.
FAQ
Q: What is your service ?
a. we can offer OEM&ODM services
b. All software free provide , and technical support after-service
c. Online installation guide services.
Q: Whats the MOQ?
To ensure the best logistic cost, we suggest 100pcs(one carton).However, we are open to take orders with small qty.Welcome to sample order, contact with us.
Q: What payment terms are available?
T/T, Paypal, Western Union, credit card.
Q: How long is your production lead time?
Sample Order-Within 1-5 working days.
Bulk Order - 15-20 days for neutral items, 7 days if the items we have stock
Q: What's Your Products Warranty?
We Offer 12 Months Warranty after shipment sent.
Access Control Keypad,Gate Entry Keypad,Keypad Access Control System,Door Entry System Keypad Zhuhai Mingke Electronics Technology Co., Ltd , https://www.mingke-tech.com