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露地蔬菜防冻措施一、做好向阳菜畦。将菜畦做成略向南倾斜的畦面,以增加畦面对太阳辐射的接收量,提高地温。二、低沟密植,适当深栽。冬季多吹西北风,可在畦上开东西向或东北西南向、深10~13cm的浅沟,将菜栽种于沟内,有避风保暖效果。据测定,沟内的土面温度可比平地上高1~2℃。冬菜种植密度可大一些,菜株间距离小不仅利于群体呼吸热的积聚,还能减轻冷风的
Frost-proof measures to open vegetables First, do a sunny dish 畦. The dishes made of slightly tilted south face, in order to increase the face of the solar radiation received, increase the ground temperature. Second, low ditch close planting, appropriate deep planted. Winter blowing more northwest wind, can be opened in the east-west or northeast southwest, deep 10 ~ 13cm shallow ditch, the vegetables planted in the trench, sheltered warm effect. According to the determination, the trench surface soil temperature can be higher than the flat 1 ~ 2 ℃. Winter planting density can be larger, small distance between the vegetables is not only conducive to the accumulation of respiratory heat, but also reduce the cold