硼是果树生长发育所需营养中的一种微量元素,它对花粉的形成、花粉管的生长以及碳水化合物和激素的运转都起着重要作用。我们在开原县莲花乡保安村的一个土壤缺硼的山楂园,1983和1984年连续进行了山楂树下施硼提高坐果率的试验。施硼方法是,开花前10天,在树冠下挖成15厘米深的放射状沟,每株树的沟内散施0.3斤硼砂,施后覆土。如果当时土壤干旱,还应及时灌水,促进根系吸收。 Boron is a trace element in the nutrients required for the growth and development of fruit trees and plays an important role in the formation of pollen, the growth of pollen tubes and the operation of carbohydrates and hormones. We were in a Kaolin County, Kaiyuan County, a soil boron-free hawthorn garden, 1983 and 1984 conducted a continuous application of boron under hawthorn to improve fruit set rate test. Boron method is, 10 days before flowering, digging into the crown 15 cm deep radial ditch, each tree ditch scattered 0.3 kg of borax, applied after the cover soil. If the soil was arid at the time, it should be timely irrigation, to promote root absorption.