Dej- cov chiv uas muaj cov macronutrients yog cov chiv ntau - cov chiv uas yog soluble tag nrho hauv dej. Lawv muaj cov macronutrients xws li nitrogen, phosphorus, thiab potassium, nrog rau cov micronutrients xws li calcium, magnesium, sulfur, boron, manganese, thiab hlau. Haum rau ntau yam kev siv nrog rau kev siv dej fertilization, foliar spraying, thiab hydroponics, lawv yog cov yam ntxwv ntawm cov dej solubility siab thiab muaj zog nqus.
Irrigation fertilization, nrog rau cov dej ntws thiab cov dej ntws, txuag dej thiab chiv, thiab tso cai rau cov nroj tsuag sai sai. Foliar fertilization yuav tsum tau diluting thiab dissolving cov chiv nyob rau hauv dej ua ntej tshuaj tsuag nws mus rau nplooj, los yog dissolving nws nyob rau hauv dej uas tsis yog - muaj zog alkaline los yog acidic tshuaj tua kab rau txawm foliar daim ntawv thov. Cov chiv nkag mus rau hauv cov nroj tsuag los ntawm stomata, tso cai rau kev nqus cov as-ham los ntawm nplooj thiab ua kom muaj txiaj ntsig zoo ntawm kev siv chiv.
