(1) cov nitrogen: nitrogen cov ntsiab lus tseem ceeb ntawm cov chiv, suav nrog ammonium bicarbonate, urea, ammonium pin, ammonia, ammonium chloride, ammonium sulfate, thiab lwm yam.
(2) p: p cov ntsiab lus tseem ceeb ntawm cov chiv, suav nrog superphosphate zoo tib yam, calcium magnesium phosphate chiv, thiab lwm yam.
(3) k: poov tshuaj khoom noj khoom haus ntsiab lus raws li lub ntsiab ntawm chiv, daim ntawv thov tsis ntau, lub ntsiab ntau yam yog poov tshuaj chloride, poov tshuaj sulphate, poov tshuaj nitrate, thiab lwm yam.
(4) compound thiab mix fertilizer, cov chiv muaj ob ntawm peb lub ntsiab ntawm chiv (nitrogen, phosphorus thiab potassium) binary compound thiab sib xyaw chiv thiab muaj nitrogen, phosphorus thiab poov tshuaj peb lub ntsiab ntawm ternary compound thiab sib xyaw chiv. Kev sib xyaw chiv nce qib sai thoob plaws lub tebchaws.
(5) qee cov ntsiab lus hauv kab kawm chiv thiab chiv, xws li yav tas los muaj boron, zinc, hlau, molybdenum, manganese, tooj liab thiab lwm yam kab kawm chiv, tom kawg xws li calcium, magnesium, sulfur chiv.
Post lub sij hawm: Mar-25-2022