我场在党委的领导下,建立了有干部、工人、技术人员参加的科学研究小组,在一号苹果园进行丰产试验,摸索苹果增产途径。苹果产量逐年上升,一九七五年到一九七七年(预产)亩产均保持在二千斤以上,改变了过去亩产数十斤的面貌。现将我们的做法介绍如下: 一、深翻施肥,掺煤渣防粘,改良土壤 一号园原质土石荒山坡,经改坡成梯后,面积十五点二亩,全园五分之一仍是石砾底,土层薄,死黄泥,粘重,酸度大,肥力极低,通透性差。果树定植后,根系圃于原来定植穴 Under the leadership of the party committee, I set up a scientific research group with cadres, workers and technicians to participate in high-yielding experiments in No.1 apple orchard to explore the ways for increasing apple production. The output of apples has been increasing year by year. From 1975 to 1977 (pre-production), the per-mu yield remained above two thousand kilos, which changed the past ten-kilos of mu produce. Now our approach is as follows: First, deep plowing the fertilizer, sticking coal residue anti-sticking, soil improvement First soil of the original rocky slopes, after the slope into the ladder, an area of ​​15.2 acres, one fifth of the park Gravel is still the bottom, thin soil, dead yellow mud, sticky weight, acidity, low fertility, poor permeability. After planting fruit trees, root nurseries in the original planting hole