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山楂在自然条件下,坐果率很低。据调查,山楂在内蒙地区平均坐果率仅为5—15％,因而造成了许多成龄大树产量偏低现象。根据外地经验,我们于1983—1985年连续三年在本地进行花期喷施赤霉素的试验和示范工作。方法是:5月30日前后,即山楂树的盛花期喷施20—50ppm 的赤霉素溶液。赤霉素溶液的配制方法是取一克赤霉素,先用少量酒精或白酒化开,再放入50斤左右的清水中,充分搅拌混匀后即可用以喷布树冠。其结果表现为坐果率提高2—3倍,果个
Hawthorn in natural conditions, the fruit setting rate is very low. According to the survey, hawthorn in Inner Mongolia, the average fruit set rate of only 5-15%, resulting in many mature trees yield is low. Based on field experience, we conducted a pilot test and demonstration project of gibberellic acid in China for three consecutive years from 1983 to 1985. The method is: before and after May 30, the hawthorn blooming spray 20-50ppm gibberellin solution. Gibberellin solution preparation method is to take a gibberellin, first with a small amount of alcohol or liquor to open, then add about 50 pounds of water, stir and mix well to spray canopy. The results showed that the fruit set rate increased 2-3 times, fruit a