[Effects of balanced fertilization on growth and fruit quality of 'Huang-guan' pear on desert area.].

A field experiment was carried out to study the effects of balanced fertilization on growth and development, yield, fruit quality and mineral content in 'Huang-guan' pear to provide a theoretical basis for the reasonable level of fertilization in pear orchards. Four treatments were arranged with 12-year old 'Huang-guan' pear trees from the same orchard: conventional fertilization (CK), low levels of N, PO and high level of S (T), medium levels of N, PO and S (T), high levels of N, PO and low level of S (T). The results showed that different treatments had little effect on the growth and development of current-year branch and leaves in the first year.