利用壁蜂传粉提高苹果产量试验在柏各庄镇小富各庄果园进行，放蜂面积３．３３ｈｍ２，对照面积２ｈｍ２，试材为６年生苹果，品种有红富士、王林、新红星、红津轻，所用壁蜂为紫壁蜂和凹唇壁蜂两种。１放蜂前的准备于３月１０日左右，在每个蜂巢附近栽种白菜根３～５棵，... The use of wall pollination to improve apple yield test in Bogezhuang Xiaofugezhuang orchard, put the bee area 3.33hm2, control area 2hm2, the test material for the 6-year-old apple, varieties Fuji, Wang Lin, new red star, red Tsugaru, wall bees used for the purple wall bee and concave wall bee two. 1 before the preparation of the bee on March 10 or so, planted in the vicinity of each beehive cabbage 3 to 5, ...