论文部分内容阅读
冬春季节增加蔬菜大棚的采光量 ,是保证蔬菜正常生长的重要措施。因此 ,除了合理的大棚朝向和棚顶角度外 ,还须注意以下几点 :一、保证棚膜清洁。对棚膜上的水滴和灰尘要经常打扫和清洗。下雪后要及时清除棚面上的积雪。晴好天气可在日出后放风排湿３０～４０分钟 ,以减少膜面
Winter and spring vegetables to increase the amount of light, is an important measure to ensure the normal growth of vegetables. Therefore, in addition to a reasonable orientation towards the shed and roof angle, we must also pay attention to the following points: First, to ensure that the shed film clean. Of the film on the water droplets and dust to be cleaned and cleaned regularly. After snowing promptly remove the shed on the snow. Good weather can be in the wind after the wind exhaust wet 30 to 40 minutes to reduce the membrane surface