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1冬春棚室蔬菜生长缓慢原因冬春茬蔬菜生长缓慢,其根本问题是根系长势衰弱。导致蔬菜根系老化的原因主要有以下。(1)地温不足:蔬菜根系生长要保持在12℃以上,新根才能生长,如果地温不足,直接导致蔬菜不生新根。(2)土壤板结和盐渍化:土壤板结和盐渍化严重影响根系下扎和更新,新根生长速度跟不上老根坏死速度,使新根少,而且过重板结和盐渍化更会加重根系的沤根现象。
1 winter spring greenhouse vegetables grow slowly The winter and spring vegetables grow slowly, the fundamental problem is the growing weakness of the root system. The root causes of vegetable root aging are the following. (1) lack of ground temperature: vegetable root growth to maintain above 12 ℃, the new root can grow, if the lack of ground temperature, a direct result of vegetables not new roots. (2) Soil compaction and salinization: Soil compaction and salinization have a serious impact on the root pruning and renewal. The growth rate of new roots can not keep up with the rate of root necrosis, resulting in fewer new roots, more overweight compaction and salinization Will increase the roots of rooted phenomenon.