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草莓水培營養(yǎng)液怎么配　自制草莓營養(yǎng)液方法

來源:鮮淘網(wǎng) 2018-06-01 16:24:56      梅應(yīng)東 手機版

　　草莓無土栽培，喝的是營養(yǎng)液，那么草莓水培營養(yǎng)液是怎么配置的呢?怎樣才能滿足草莓成長的營養(yǎng)需求呢?接下來果果就帶大家了解草莓水培營養(yǎng)液怎么配和自制草莓營養(yǎng)液方法吧。

　　一、草莓水培營養(yǎng)液怎么配

草莓水培營養(yǎng)液怎么配　自制草莓營養(yǎng)液方法

　　草莓水培營養(yǎng)液配方：

　　1、名稱用量(mg/L)

　　2、四水硝酸鈣236A液

　　3、硝酸鉀303

　　4、磷酸氫二銨57B液

　　5、七水硫酸鎂123

　　總計：719

　　二、自制草莓營養(yǎng)液方法

草莓水培營養(yǎng)液怎么配　自制草莓營養(yǎng)液方法

　　自制草莓營養(yǎng)液注意事項：

　　1、營養(yǎng)液用水：

　　自然雨水是最安全的水源，但從使用聚氯乙烯薄膜的棚室中接受的雨水則受可塑劑酞酸酯影響。

　　從玻璃溫室接受的雨水易引起硼過剩癥。井水多含氯、鈣、鐵、鎂及微量元素鋅、銅、鉬等，須預(yù)先分析水中元素含量，以決定營養(yǎng)液配制時的適宜增減量。

　　利用自來水和河水時，常因殘留氯和混入除草劑引起生育障礙。特別是自來水未做去氯處理，殘留氯會引起蔬菜根腐病發(fā)生。

　　當河水、井水及自來水等營養(yǎng)液用水含鹽過量時，可用蒸餾法、離子交換法、電滲析法等去除。用雨水代替則更為經(jīng)濟。

草莓水培營養(yǎng)液怎么配　自制草莓營養(yǎng)液方法

　　2、營養(yǎng)液供給：

　　營養(yǎng)液供給障礙以灌水管和滴管頭堵塞最為常見，尤其在巖棉及基質(zhì)栽培中發(fā)生較多。

　　滴管噴嘴堵塞。使用后噴嘴未充分洗凈，肥料結(jié)晶，堵塞噴嘴，施工時不慎灰塵進入供液管，造成噴嘴堵塞。

　　有時噴嘴雖暢通，但管內(nèi)大量滋生藻類，造成供液障礙，應(yīng)及時用雙氧水清洗。

　　灌水管障礙。使用質(zhì)量較差的灌水管，生育后期因堵塞造成供液不均，生長發(fā)育受阻，隨生育進程供液量突然增加，灌水管破損，造成供液障礙。

草莓水培營養(yǎng)液怎么配　自制草莓營養(yǎng)液方法

　　營養(yǎng)液配制步驟：

　　1、肥料計量器具未校正或校正有誤，造成配制的母液濃度、組成與原設(shè)計不同。肥料溶解先后順序錯誤，未能全溶 。

　　2、忽略了肥料元素表示法和氧化物表示法的不同，造成營養(yǎng)液配制錯誤。

　　3、采用普通肥料，純度過低，原液配制時發(fā)生沉淀;從補水口附近取樣，造成分析結(jié)果偏低。由于從取樣到結(jié)果分析需要時間，難以及時調(diào)整肥料組成和濃度。

　　4、漏加微量元素，引起全部植株發(fā)生微量元素缺乏癥，產(chǎn)生莖葉黃化現(xiàn)象。

　　5、循環(huán)式營養(yǎng)液栽培中常用電導(dǎo)率(EC)變化來調(diào)控總離子濃度。但常因鈣、鎂等，特別是鈉積累過多，導(dǎo)致生育不良。

草莓水培營養(yǎng)液怎么配　自制草莓營養(yǎng)液方法

　　6、即EC值變化不能反映營養(yǎng)液中單一元素濃度及各組分比例等變化，造成營養(yǎng)過?；蛉狈?。

　　7、有時發(fā)現(xiàn)循環(huán)營養(yǎng)液中磷濃度過低，則提高磷濃度，造成磷被過量吸收，發(fā)生葉片黃化現(xiàn)象。

　　8、為提高營養(yǎng)液pH值，增施銨態(tài)氮，但因作物優(yōu)先吸收銨態(tài)氮，營養(yǎng)液中剩余較多的硝態(tài)氮，結(jié)果導(dǎo)致pH值更加降低。

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