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茼蒿耐寒多少度 茼蒿能耐多少度低溫

  • 生活
  • 2023-04-19 18:32
茼蒿耐寒8℃左右。茼蒿喜溫暖、濕潤(rùn)的環(huán)境,生長(zhǎng)溫度需要控制在15~20℃之間,適宜的溫度有利于植株生長(zhǎng)發(fā)育。冬季需要做好防凍措施,將生長(zhǎng)環(huán)境的溫度控制在15℃以上,植株能安全過(guò)冬。冬季植株生長(zhǎng)緩慢,澆水時(shí)需要控制水量,避免土壤積水。

  茼蒿播種前施足腐熟基肥,每畝1500~2000千克,另加磷酸二銨20~25千克,均勻撒在田內(nèi),翻耕耙平做成平畦。

  茼蒿種植主要采取撒播或條播,播種后覆土1厘米左右,壓實(shí)土壤。春播一般在3~4月間,秋種在8~9月間,冬種在11~12月間。小葉品種適于密植,用種量大,每畝2~2.50千克;大葉種側(cè)枝多,開(kāi)展度大,用種量小,每畝1千克左右。

  茼蒿生長(zhǎng)適溫17~20℃,早春播種天氣還比較冷涼,并伴有倒春寒現(xiàn)象,因此播種后需要在畦面上覆蓋地膜或舊棚膜,四周用土壓實(shí),防寒保溫。

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