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Vegetable management in spring, do a good job of

News briefing: As the temperature gradually rises, the temperature difference between day and night becomes smaller, and vegetable plants are prone to grow excessively, especially solanaceous fruits and melon vegetables. Once the plant is elongated, it is easy to cause

Vegetable management in spring, do a good job of



随着春季气温升高,棚内夜间温度也明显升高。如果此时大棚蔬菜管理处理不当,容易出现过度生长、高温障碍和激素中毒等现象,造成落菜、落果、叶片变黄、过早衰老。建议 当前蔬菜管理要做好六大预防。

1.防腿

随着气温逐渐升高,昼夜温差变小,蔬菜植物容易过度生长,尤其是茄科水果和瓜类蔬菜。一旦植株拉长,容易造成落花落果,即使坐果,也容易出现空心果等畸形果。

为防止过度生长,首先要注意拉大昼夜温差;其次,施肥时氮肥用量不宜过大,应尽量增加磷钾肥的施用量,以促进植株坐果。

2、防止施肥不当

生长发育进入中后期后,植物对肥料的需求量会增加,容易出现失肥现象,导致植物过早衰老。在适当增加浇水次数和浇水量的同时,结合浇水,每7天左右施一次肥。

追肥应把握“少量多次”的原则,避免化肥一次施用过多造成浪费,或浓度过大造成烧根。注意平衡施肥,适量增加磷钾肥的使用,提高植株的抗逆性。

3、防“春寒”

幼苗出苗后,及时给苗床通风,

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