商品詳情
鉀鹽(過量的鉀會抑制鈣和鎂的吸收、導致鈣和鎂的缺乏)
在植物中,它不會結合到蛋白質和核酸等有機成分中,而是與水溶性的無機和有機成分電結合,或者以離子形式存在以維持細胞質結構並調節其pH和滲透壓。 ,激活酶。
當鉀缺乏時,症狀從下葉出現。症狀因作物而異,但葉子上會出現白色至棕色斑點,葉間靜脈和葉脈變黃,葉子向外滾動並生長不良。
土壤中過量的鉀會抑制鈣和鎂的吸收,從而導致鈣和鎂的缺乏。
硫
它是幾種氨基酸的組成部分,佔蛋白質的0.5%至1.6%。它對酶的功能至關重要。
不足時,上面的葉子變成淡綠色或黃色。從根部吸收的硫酸根離子造成的過度傷害不是大問題,但諸如亞硫酸鹽氣體和硫化氫引起的根腐爛等問題卻是一個問題。
(1)當土壤中鉀肥不足時,尤其是在腐爛程度低的沙質土壤中,很可能會發生鉀肥缺乏。
(2)即使有適量的鉀肥,如果土壤中存在大量的石灰或苦味的土壤,鉀的吸收也會受到抑制,並且會促進鉀的缺乏。
(3)當堆肥等有機物和鉀肥的施用量少,供給量不能滿足吸收量時,容易發生。
(4)日光低,土壤溫度低或濕度過高會抑制鉀的吸收,這很可能發生。
(5)在水耕法中,鉀的施用量少時,往往會發生。
診斷要點
(1)確認疾病的部位和症狀是否是該不足的特徵,並確認鉀肥的施用劑量是否合適。
(2)如果產量極高並且在生長後期發展疾病,請檢查鉀肥的施用量是否合適。
(3)在水耕法中,確認鉀肥的施用量是否合適。
四。對策
(1)適當施用鉀肥,尤其要注意在生長的中後期不要耗盡肥料。
(2)施用足夠的有機材料,例如堆肥。
(3)如果土壤中的石灰或苦土含量高,並且基本平衡不正常,請進行調整以使基本平衡合適。
(4)當擔心缺乏時,檢查生長情況並添加鉀肥
(5)如果是水培栽培,請更新至合適的培養液。
(6)如果在生長季節出現營養不足,請當心避免對化學物質造成損害,例如避免避開高濕和高溫,並每隔一周多次使用0.3%的硝酸鉀溶液。噴塗在表面上。
圖片來源:日本網站、以色列網站
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鉀鹽(過量的鉀會抑制鈣和鎂的吸收、導致鈣和鎂的缺乏)
TWD $99,999,999
TWD $99,999,999
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