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Ургамлын халдваргүй өвчин үүсэх нөхцөлүүд: • Температур (өндөр, нам) • Гэрэл • Хөрсний чийг • Хүчилтөрөгч • Агаарын бохирдол • Тэжээлийн бодисын дутагдал • Эрдэс бодис • Хөрсний хүчиллэг болон шүлтлэг чанар (pH) • Пестицид • Хөрс боловсруулалт 10. Ургамлын халдваргүй өвчний голлон илрэх гадаад шинж тэмдэгүүд …
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