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山楂原产我国,我市宿迁县早在400年前就已栽培。过去山楂生产极其粗放,产量低而不稳。近年来渐为广大干群所重视,发展很快,宿迁县仅1984年冬就发展山楂7000余亩,沭阳、盱眙也迅速发展。为正确制定农业技术措施,迅速提高山楂的产量与质量,我们两次在宿迁县支口乡对铁球、绵球两个品种定树、定枝、定期观察了生长结果规律、物候期及落花落果等,并用Ascanp法进行根系观察;1983～1984年又在淮阴县果林场对实生红果进行了观察。现将结果整理如下。
Hawthorn origin of our country, Suqian County, as early as 400 years ago has been cultivated. Hawthorn production in the past is extremely extensive, low yield and instability. In recent years, the majority of cadres and gradually attach importance to the rapid development of Suqian County in 1984 alone on the development of hawthorn more than 7,000 acres, Shuyang, Xuyi also rapid development. In order to correctly formulate agricultural technology measures and quickly increase the yield and quality of hawthorn, we twice fixed and fixed the two types of iron ball and cotton ball in Branch Township, Suqian County, regularly observed the growth regularity, phenophase and drop Etc., and observed the root system with Ascanp method. From 1983 to 1984, they observed the real red fruit in Huolin Farm of Huaiyin County. The results are now organized as follows.