MUNDARIJA KIRISH……………………………………………….……….…………..3 I BOB. SOXTA AKATSIYA (ROBINIA PSEUDOACACIA L) NING O’RGANILISHI …………………………………………..……………...8 1.1-§. Burchoqdoshlar oilasining tavsifi………………….………………..8 1.2-§. Soxta akatsiya (robinia pseudoacacia L) ning tarqalish areallari va botanik tavsifi ……………………………………..……………..……..…15 I bob bo’yicha xulosa………….………………..……………………….....25 II BOB TADQIQOT SHAROITI, OB’YEKTI VA METODLARI..….27 2.1-§. Tuproq iqlim sharoitining umumiy tavsifi..........................................27 2.2-§. Tadqiqot obyekti va metodlari............................................................39 II bob bo’yicha xulosa……...………………..……………………….….....42 III BOB SOXTA AKATSIYANING ASALSHIRALI VA KO’KALAMZORLASHTIRISHDAGI AHAMIYATI…………………43 3.1-§ Soxta akatsiya (robinia pseudoacacia L) ning o’sishi va rivojlanishi, fenologiyasi …………………………………………………………………43 3.2-§ Soxta akatsiya (robinia pseudoacacia L) ning gullash biologiyasi……………………………………………………………….......51 3.3-§. Soxta akatsiya (robinia pseudoacacia L) gulining asal mahsuldorligi va ko’kalamzorlashtirishdagi ahamiyati ….…………….………………..…….59 III bob bo’yicha xulosa ………………………...…….………………….….72 XULOSALAR…………………………………………….………..………73 FOYDALANILGAN ADABIYOTLAR RO`YXATI……………...……..74 ILOVALAR……………………………...……………….……...................78