2Moreira M A,Fontes P C R,Fontes R L F,Cardoso A A.Growth and yield of potatoes in relation to method of application of Zn fertilizers and to fungicides containing Zn[J]. Horticultura Brasileira,2000,18(1):72-76.
5Haberlant R.Do potatoes need trace element fertilizer?Brauchen Kartoffeln eine Mikronahrst off dun gung? [J]. Kartoffelbau,2000, 51:260-264.
6Bari M S et al.Effect of zinc,boron,sulphur and magnesium on the growth and yield of potato[J].Pakistan Journal of Biological Sciences ,2001,4(9):1090-1093.
7Sahota T S.Phosphorus and zinc interaction in potato at Shillong[J]. Journal of the Indian Potato Assciation,1985,12(1/2):95-97.
