中药材的栽培方法与农作物有什么不同?

2025-03-25 13:42:23
推荐回答(1个)
回答1:

中药材的栽培理论和具体栽培方法,与农作物基本一样,大同小异。都要通过选地,整地施肥,播种,浇水,松土除草,追肥,病虫害防治以及产品收获干燥等工序,方法差不多,也不太难。但药用植物的种类多,有些生物学特性比较特殊的药用植物,其具体栽培方法就有所不同,要求也较高:如有些喜阴的药材人参、黄连等栽培时还要搭棚遮荫,控制光照;有些药材的种子和繁殖用的根茎还有休眠的特性,人参和黄连采收下来的种子的种胚还没有形成,需要采用温度处理促进后熟,使形成完整的种胚即完成形态后熟。种胚形成后还要通过一定的低温阶段完成生理后熟,在适宜的温湿度条件下才能发芽生长;有些药材种子的种胚已形成,但因种皮坚硬不透水也不能发芽,如甘草和黄芪种子,必需用砂磨、酸碱浸泡处理或用碾米机碾撞,使种皮受伤能透水,种胚才能吸水发芽,否则播后是不会发芽的或发芽率很低(其发芽的种子多数是没有成熟的幼嫩种子,其种皮较嫩容易透水);有些中药材需要与其它植物或真菌共生如天麻需与蜜环菌共生才能生长发育,栽培时需先培养蜜环菌材后拌栽天麻才能获得成功,菟丝子需寄生在豆科、黎科等植物上,肉苁蓉需寄生在梭梭植物上,这些寄生植物需要有寄主植物与其伴生,才能正常生长,否则无法生存(因得不到营养而饿死)。

有些中药材要求严格的生态环境,不能随便到处引种栽培。如当归:原产高寒阴湿山区,要求冷凉的气候条件。著名当归地道产区,甘肃岷县在海拔2000米以上的地方种当归,但要在海拔2400~2900米的高山阴坡育苗,这样种出来的当归产量高,质量好,如在海拔较低的地区育苗、栽种,因气温较高,生长快,容易抽薹开花,抽薹后的根变木质化,不能药用,所以产量低,质量差,气味也不浓,如在海拔更低的地区引种,因不能忍受夏季高温而死亡。

黄连:以根茎入药。主产四川、湖北、陕西等省海拔1400~1700米山区,喜凉爽、湿润的气候。黄连原野生于森林下,因而形成了喜阴、怕强光的特性,所以人工栽培必须搭棚或在林下种植。同时也要求富含腐殖质和疏松肥沃酸性的砂质壤土。如把黄连移栽到低山区,因气温高,生长快,叶茂密,但根茎不充实,质量差又易染病。在北方种植,因早春干旱,土壤偏碱生长不良,又不能越冬,在全光照下栽培更无法生存。

砂仁:以种子入药,有健胃和消食作用。它喜欢生长在高温、高湿的亚热带气候,主产区在广东阳春和云南景洪,年平均气温在22℃左右,极端最低气温不低于1~2℃,春季开花期如气温低于20℃,花不能开放或开放不正常。在长江流域一带种植,生长不良,花薹短,开花少甚至不能开花,再往北移,冬季不能安全越冬会被冻死。

甘草:产于内蒙古、新疆和宁夏等干旱、半干旱的荒漠、半荒漠地区,要求土层深厚、排水良好的砂性土,偏碱的钙质土最适宜种植。如在多雨地区或在黏土地种植,根的生长不良,主根短、叉根多,容易引起烂根死亡,质量差。虽然这些对环境条件有特殊要求的药用植物,栽培技术难度较大,但是只要对其植物学和生物学特性有所了解,根据其特性要求,制定出符合其特性的栽培技术措施,首先应选择适宜该药材生长的地区,如气候及土壤条件,再制定出适宜生长的栽培技术措施,栽培成功并获得高产是不成问题的,若违背某种药材的生物学特性,盲目引种栽培,将会适得其反,以惨痛的失败而告终。

上面已经说过,药材的栽培技术与农作物大同小异,各类药材的栽培技术有哪些特点,请看下面几个问题。

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