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我地春水萝卜(Raphanus SatiusL.ssp.radiculus)在早春落地栽培中,由于低温的影响,往往肉质根还未充分膨大,就通过春化阶段而抽薹开花,致使春水萝卜糠心而失去食用价值。1979年春,我们用上年塑料大棚退下来的旧薄膜,就地覆盖在刚播种的春水萝卜地面上,出苗后立即揭除,结果覆盖
In the early spring, Raphanus SatiusL.ssp.radiculus, which is cultivated in early spring due to the influence of low temperature, is often bolted and bloomed through the vernalization stage due to the low temperature, which causes the heart and loss of food value. In the spring of 1979, we used the old film that was pulled back from the plastic shed last year to cover the freshly planted spring water radish on the ground and remove it immediately after emergence. The result was covered