日本中文字幕一区-日本中文字幕一区二区有码在线-日本中文字幕永久在线-日本中文字幕在线播放-成人自拍视频在线观看-成人自拍偷拍

Qingzhou Allwin EP Technology Co. , Ltd.

Company New

Your Current Location : Home NEWS Company New
Company New

Basic conditions to be considered for vegetable greenhouse construction

Source: Time:2018-03-06 10:31:21 views:

As an important agricultural production facility in modern times, the construction of vegetable greenhouses has become a matter of great concern to people. A reasonable and high-quality vegetable greenhouse can make production more efficient. Here, Qingzhou Xinze Agricultural Technology Co., Ltd. will introduce the two basic conditions that need to be considered in the construction of vegetable greenhouses:

        Water source conditions: Generally in the cold season, the temperature of the ground water is very low, and it is not suitable for greenhouse irrigation. It is best to use groundwater. Well water with a depth of three to ten meters is maintained at a constant temperature of fourteen degrees Celsius throughout the year, and each thirty meters deepens the water temperature by one degree. In early spring, if electricity and water are used for irrigation with a depth of 100 meters, the ground flow distance is short, and the water temperature can reach 15 to 17 degrees Celsius. Therefore, it is best to have a near groundwater source for the construction of plastic greenhouses.

        Traffic conditions: Plastic greenhouses have gradually developed to large and large areas, and the transportation of production materials and products is large. Therefore, convenient transportation should be considered when choosing a shelter. At the same time, considering the management conditions, the greenhouse is located near the village, which is usually easy to manage. In the event of a snowstorm, it is also good to mobilize the masses to rescue in time.


Qingzhou Allwin EP Technology Co. , Ltd. MOB/Telegram/Wechat: +86 13791633883 +86 15165283755 Tel:+86 536 3890136 Email: admin@allwinep.com
主站蜘蛛池模板: 三级黄色片子| 大狠狠大臿蕉香蕉大视频| 西西人体44rtwww高清大但| 情侣视频精品免费的国产| 美女扒开尿口让男人桶进| 国产高清一级伦理| 麻豆高清区在线| 久久国产精品久久| 国产一级片在线| 再深点灬舒服灬太大了添学长 | 日本肉文| 亚洲国产成人久久综合一区77| 精品无人区麻豆乱码1区2区| 尹人香蕉久久99天天拍欧美p7 | 小唐璜情史在线播放| 国产成人av在线影院| 87福利电影| 日本巨黄视频| 岳好紧| 啊灬啊别停灬用力啊岳| 久久精品卫校国产小美女| va亚洲va日韩不卡在线观看| 女让张开腿让男人桶视频| 在线观看国产| 久久4k岛国高清一区二区| 打开腿我想亲亲你下面视频| 好吊操在线视频| 131的美女午夜爱爱爽爽视频| 在线观看一级毛片免费| 国产综合在线观看视频| 99在线精品免费视频| 国产乱子伦在线观看| 美女张开双腿让男生捅| 水蜜桃免费视频| 国产精品久久久久久久| 欧美三级电影免费| 2019国产开嫩苞视频| 欧美性理论片在线观看片免费| 黑人娇小| 免费观看a级毛片| 奇米网奇米色|