孙凤桐是河北省花果之乡的昌黎后两山的果树能手,他经营果树已经十年了,他对于喷药,剪枝,疏果,施肥等增加生产的方法,都具有信心。兹把他的经营经验介绍如下:一、及时除虫他常说:「果树不除虫,就没有收成。他在早春二、三月间,对于梨树就施行刮树皮除虫的工作,他们村里流行的「要吃梨刮树皮」的谚语,是多么明确呀!刮树皮确实能除许多的虫子,如星毛虫 Sun Fengtong is a fruit tree expert in the two mountains of Changli in Hebei Province, the hometown of Huaguo. He has been operating fruit trees for ten years. He has confidence in methods of increasing production such as spraying, pruning, thinning and fertilizing. I hereby introduce his business experience as follows: I. Timely pest control He often says: “If the fruit tree does not pest, there will be no harvest, and in February or March of early spring, he will carry out the work of scraping bark pest on the pear tree, How clear is it that the bark, which is popular in the village, ”eat pears and bark," can remove many bugs like the star caterpillar