辣椒生长对光照有何要求?

2025-04-07 02:29:38
推荐回答(4个)
回答1:

照明。辣椒要求中等强度,对较弱的光线有抵抗力。

光线充足,辣椒苗节短,茎粗,叶厚,颜色深,根发达,抵抗力强,不太能感觉到病。光不足往往导致植物生长,茎细,叶薄,花蕾果实发育不好,容易出现落花、落果、落叶现象。光线太强对辣椒生长也不利。生长发育受阻,气孔关闭,光合作用下降,叶子和果实灼伤。

辣椒,别名:牛角椒、长辣椒、菜椒、灯笼椒,拉丁文名:Capsicum annuum L.,为木兰纲、茄科、辣椒属一年或有限多年生草本植物。茎近无毛或微生柔毛,分枝稍之字形折曲。叶互生,枝顶端节不伸长而成双生或簇生状,矩圆状卵形、卵形或卵状披针形,全缘,顶端短渐尖或急尖。

基部狭楔形;花单生,俯垂;花萼杯状,不显著5齿;花冠白色,裂片卵形;花药灰紫色。果梗较粗壮,俯垂;果实长指状,顶端渐尖且常弯曲,未成熟时绿色,成熟后成红色、橙色或紫红色,味辣。种子扁肾形,淡黄色。

回答2:

辣椒对于光照的适应性较广,一般说来,辣椒要求充足的光照,但它比其他果菜类更耐弱光。辣椒对光照的要求也依不同生育时期而有别。发芽时种子要求黑暗条件,在有光条件下往往发芽不良;幼苗期需良好的光照条件;开花结果期需充足的光照,光照充足有利于花器生长发育,光照不足则会引起落花落果。辣椒对日照长短反应不敏感,只要温度适宜,营养条件好,在光照长或短条件下均能开花、结果。

回答3:

辣椒是喜光作物,除了种子发芽阶段不需阳光外,其他生育阶段都要求充足的光照。幼苗生长期,良好的光照是培育壮苗的必要条件。光照充足,幼苗节间短,茎粗壮,叶片肥厚,颜色浓绿,根系发达,抗逆性强,不易感病。光照不足,往往造成植株徒长,茎秆瘦长、叶片薄、花蕾果实发育不良,容易出现落花、落果、落叶现象。

回答4:

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