Study on the Models of Several Factors in Yali Pear Chemical Fruit Thinning
YANG Jun-xia, GUO Bao-lin, LI Hua-feng, LU Li-ming
ACTA AGRICULTURAE BOREALI-SINICA . 2002, (S1): 140 -143 .  DOI: 10.3321/j.issn:1000-7091.2002.z1.031