我队630亩40多年生的老梨树,近年来产量不断提高。1975年平均亩产7,500斤,其中15亩丰产园,亩产达10,460斤。我们的管理措施是:一、粘土压沙,沙地压土,改良土壤我队梨园70%是沙滩地,部分粘壤土。沙滩地离地面60厘米以下是粗砂,保水保肥能力差,树势衰弱,落花落果较重。我们试验在沙地上压湾泥和土,在粘壤土上压沙20厘米,这对复壮树势,保肥养根,提高座果率有显著作用,使亩产由3,500斤增至6,000斤。此外,一年进行5—6遍中耕除草。春 My team of 630 acres of 40-year-old pear old tree, production continues to increase in recent years. In 1975, the average yield per square kilometer was 7,500 kilograms, of which 15 acres of high yielding garden produced 10,460 pounds of mu. Our management measures are: First, clay sand, sand pressure, improve the soil 70% of my team Liyuan is the beach, some clay loam. Sand beach below 60 cm from the ground is coarse sand, poor water retention and fertility, tree weakness, falling heavier. We experimented with pressure gully clay and soil in the sand and sand compaction of 20 cm on the clay loam. This has a significant effect on rejuvenating the tree vigor, preserving the nutrients and increasing the fruit set rate, increasing the per-mu yield from 3,500 to 6,000 kg. In addition, 5-6 times a year weed cultivation. spring