NGHIÊN CỨU BÓN PHÂN CÂN ĐỐI CHO CÂY CÀ PHÊ CHÈ TẠI MỘT SỐ TIỂU VÙNG SINH THÁI TÂY BẮC

Currently, almost all coffee growers in Northwest region (Son La and Dien Bien) have not adopted advanced technology, expecially fertilizer application technique. Therefore, managers and farmers are concering about sustainability of coffee production which nagatively affects on growers’income. This report indicated results of a research on balancing fertillizer application in some ecological areas in Northwest region. The findings showed that: among 4 combination treatments of NPK, the appication of mixing NPK rate of 2,5-1,0-3,0 with 250N+100 P2O5+300 K2O/ha for Catimor at mature stage gave higher fruit/grain yields, 100 grain weight, grains sizes through out 18 and 16 screen than 3 other mixing treatments. Differences of yields, fresh fruit/grain rate and round shape were statistical significant. Yields gained from 2,42 to 2,48 ton grain/ha.