2024年7月18日 星期一 19:43:55

拱棚早熟马铃薯苗期管理要点

    一、视墒情及时补灌除草
  若播前土壤墒情好,不易灌水,在达到苗齐、苗全、苗壮时应及时灌水,补充水分。灌水时切忌大水漫灌,灌水后一周内视棚内墒情在垄沟间进行中耕除草。
  二、视棚内温度及时通风
  拱棚马铃薯苗期是茎叶生长最旺盛的时期,叶片的长度和宽度迅速增加,叶面积指数提高,光合作用增强,根茎叶迅速生长。通侧风时由小到大,隔35天轮换侧通风口,以利棚内马铃薯均衡生长,并及时将压膜线压紧,以免放侧风时大风揭膜。
  三、防止植株徒长,应及时揭除地膜
  拱棚早熟马铃薯进入五月中旬,随着气温升高,地温也不断升高,地膜提高地温的作用已经达到,当地温超过18
时,应及时揭掉地膜或膜面覆土,防止植株地上部分徒长,促其地下发棵生长。
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