Kalit soʻzlar:
- tuproq muhiti
- gumus
- korrelyatsiya koeffitsienti
- harakatchan fosfor
- almashinuvchan kaliy
- migratsiya koeffitsienti
Abstrak
Ushbu tadqiqot Zarafshon vodiysi tuproqlarida suvda eriydigan bor (B)ga ta’sir qiluvchi omillarni o‘rgandi. Jomboydan Olot tumanigacha boʻlgan hududni qamrab olgan Zarafshon daryosi boʻyidagi 17 ta tuproq kesmasining ustki va ostki qatlamidan tuproq namunalari olindi. Gumus miqdori, pH va fosfor, kaliy, molibden, marganets, rux va kobalt kabi turli xil ozuqa moddalarining konsentratsiyasi kabi tuproq xususiyatlari tahlil qilindi. Korrelyatsiya va regressiya tahlillari suvda eriydigan bor va tuproqning bir qancha xususiyatlari o‘rtasida sezilarli bog‘liqlik mvjudligini aniqladi. Tuproq strukturasi (og‘ir tuproq), tuproq pH (ishqoriy sharoit) va o‘zlashtiriluvchan molibden bilan kuchli ijobiy bog‘liqlik kuzatildi. O‘zlashtiriluvchan marganets, yalpi bor, ona jins, o‘zlashtiriluvchan rux va gumus miqdori bilan o‘rtacha ijobiy korrelyatsiya aniqlandi. Aksincha, almashinuvchan kaliy va suvda eriydigan bor o‘rtasida o‘rtacha salbiy korrelyatsiya kuzatildi. Natijalar Samarqand vohasi tuproqlarining ustki qatlamida borning tanqisligini ko‘rsatadi. Shuning uchun hosildorlikni oshirish uchun bor bilan o‘g‘itlash tavsiya etiladi. Turli qo‘llash usullarini ko‘rib chiqish mumkin, jumladan, urug‘larni namlash, tuproqqa qo‘llash va bargdan oziqlantirish. Bundan farqli ravishda, Buxoro va Qorako‘l vohalarining allyuvial tuproqlari suvda eruvchan borning ko‘pligi bilan ajralib turadi, bu esa ayrim ekinlar uchun optimal qiymatlardan yuqori. Ushbu hududlarda borli o‘g‘itlari diqqat bilan baholanish va birinchi navbatda urug‘larni namlash va bargdan oziqlantirishda foydalanish uchun ko‘rib chiqilishi kerak.
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