1.Causes soil salinization
If chicken manure is used for years, a large amount of sodium chloride remains in the soil. Too much salt will seriously restrict the permeability and activity of the soil. The solidification of important elements such as phosphate fertilizer, potassium fertilizer, calcium, magnesium, zinc, iron, boron and manganese restricts the improvement of crop yield and quality.
2.Burning roots and seedlings
Lako je uzrokovati bolest biljaka i smrt ako pileći gnoj nije temeljito fermentiran. Ako nakon korištenja pilećeg stajskog gnoja umetnete ruku u tlo koji nije temeljito fermentiran, Osjetit ćete da je temperatura tla veća. Ovo je druga fermentacija sirovog stajskog gnoja u tlu. Posebno u proljeće i ljeto, Kad je temperatura visoka u stakleniku, Sekundarna fermentacija sirovog stajskog gnoja emitirat će puno topline, što je lako uzrokovati spaljivanje korijena
3.Donijeti antibiotike
Danas, U velikoj stoci i uzgoju peradi, Veliki broj antibiotika koristi se za poboljšanje korištenja hrane i promicanje rasta životinja. Oko 70% antibiotika se ne može apsorbirati nakon uporabe, Dakle, sadržaj antibiotika u životinjskom izmetu općenito je visok. The antibiotics contained in unrolled chicken manure will seriously affect the physiological process of crop roots and significantly inhibit its growth.
4.Breeding of root knot nematodes
Chicken manure is the camp and hotbed of root knot nematodes. The number of eggs carried by chicken manure is 100 per 1000 grams. The nematodes are extremely sensitive to chemical agents. After spraying, the nematodes will quickly move to the depth of 50 cm-1.5 m underground to escape. The nematode eggs in chicken manure are easy to hatch and multiply by tens of thousands overnight, so it is difficult to eradicate the disease.