Puas yog feem ntau cuam tshuam los ntawm cov khoom siv organic?

2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38

Cov lus teb raug yog - a. av xim. Txawm hais tias txhua yam ntawm cov av hloov pauv thaum qhia txuas ntxiv mus rau ntau cov khoom siv organic, qhov kev hloov pom tau tshaj plaws yuav yog xim av.

Vim li cas cov khoom siv organic hauv av tseem ceeb?

Ntawm tag nrho cov ntsiab lus ntawm cov av, cov organic teeb meem yog qhov tseem ceeb tshaj plaws thiab feem ntau nkag siab yuam kev. Organic teeb meem ua lub reservoir ntawm as-ham thiab dej nyob rau hauv cov av, pab txo cov compaction thiab nto crusting, thiab tsub kom dej infiltration rau hauv av.

Cov av twg muaj cov organic teeb meem ntau dua?

Soil Texture

Zoo-textured xau, muaj cov feem pua ntawm cov av nplaum thiab cov av nplaum, zoo li muaj ntau cov av organic teeb meem ntau dua li cov xuab zeb ntxhib. los yog xuab zeb loams. Cov organic teeb meem cov ntsiab lus ntawm cov xuab zeb yuav tsawg dua 1%; loams yuav muaj 2% mus rau 3%, thiab av nplaum los ntawm 4% mus rau ntau tshaj 5%.

Yuav muaj pes tsawg cov organic hauv av?

Av organic teeb meem yog ib feem ntawm cov av uas muaj cov nroj tsuag lossis tsiaj cov ntaub so ntswg nyob rau ntau theem ntawm kev tawg (decomposition). Peb cov av ua liaj ua teb feem ntau muaj nruab nrab ntawm 3 thiab 6% cov organic teeb meemCov av organic cuam tshuam rau cov av tsim tau ntau yam.

Cov khoom siv organic hauv av nyob qhov twg?

Feem ntau cov av organic teeb meem yog los ntawm cog cov ntaub so ntswgCov seem cog muaj 60-90 feem pua ntawm cov dej noo. Cov khoom qhuav uas seem muaj xws li carbon (C), oxygen, hydrogen (H) thiab me me ntawm sulfur (S), nitrogen (N), phosphorus (P), potassium (K), calcium (Ca) thiab magnesium (Mg).