论文部分内容阅读
由于塑料大棚栽培草莓产量高,鲜果供应期长,经济效益显著,各地发展较快。但是,塑料大棚栽培草莓有以下问题需要注意。1.换气不当,畸形果增多。大棚的温度控制,是通过通风换气来降低过高的温度,换气时空气由进气口直接吹入,经考查,这样的大棚内畸形果往往很多。因此,应在进气口内侧0.5米处设置0.5米高的挡风布,避免空气直接吹入。2.有害气体为害。在春季,如果有大风或降雨并伴随低气压通过时,土壤中有机肥分解产生的二氧碳等气体从土壤中逸出,这
As a result of plastic greenhouse cultivation of strawberry high yield, long-term supply of fresh fruits, significant economic benefits, rapid development around. However, the plastic greenhouse cultivation of strawberry need to pay attention to the following problems. 1. Improper ventilation, abnormal fruit increased. Greenhouses temperature control is to reduce the high temperature ventilation, ventilation air directly into the air inlet, after examination, such a large number of deformities in the greenhouse are often. Therefore, a 0.5-meter-high wind screen should be installed 0.5 meters inside the air intake to prevent air from blowing in directly. 2. harmful gas damage. In the spring, if there is strong winds or rainfall accompanied by low atmospheric pressure, gases such as carbon dioxide produced by decomposition of organic manure in the soil escape from the soil, which