2024年7月18日 星期一 19:43:55

木薯高产种植五法

一、种茎斜切。木薯块根由幼根发育而成,斜切种茎增加了切口和外露皮层的面积,提高了幼根数目和成薯率。斜切方法:在木薯种茎下端,用利刀斜切成马耳形。要选择品种优良、粗壮、节密的种茎作种,每段种茎长20—30厘米,并应有5—6个芽点。  
二、割破皮层。斜切的木薯种茎种植前在离斜切口3.3—6.6厘米处的两侧各开一个“窗口”,并割破1—2层皮层(不要环割),然后起畦开沟种植。薯茎平摆于沟上,“窗口”朝向沟的两边,这样愈伤组织亦能生根结薯。  
三、薯头作种。由于木薯头粗大,含养分多,因此可把新鲜健壮带有6.6—10厘米地上茎的木薯头,经斜切处理后作种。  
四、浸萘乙酸。木薯种茎斜切后,放入1000倍萘乙酸水溶液浸泡2—3小时,然后种植。这样做,出根快、早、多,萌芽好、壮、旺,长薯迅速,木薯淀粉含量多、高产。
五、喷施多效唑。结薯期,每亩用15%多效唑可湿性粉剂对水50—60公斤作叶面喷施,可增加叶片厚度,使植株矮壮,加速薯块伸长与膨大,提高淀粉率和产量。

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