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金帅为我区苹果主栽品种。具有早果、丰产、质优、耐霜冻等优点。但管理不善时大小年严重,树势易早衰。本试验的目的是在中上肥水条件下研究增产关键措施,使亩产稳定在7000斤左右,大小年变幅小于20％。试验设在青铜峡县广式公社园林大队,树龄15年,密度6×7米。地力较差,土层60～85厘米,下有粗砂砾石层。0～20厘米土层 pH8,有机质0.87％,全氮0.0486％,全磷0.073％,全钾2.64％,碳酸钙10.6％。1976年秋深翻改土,1977年正式开始试验,1982年结束。现将结果简结如后。
Jinshuai Apple cultivated varieties for my area. With early fruit, high yield, high quality, frost resistance and so on. However, poor management of the size of the year, the tree tends to premature aging. The purpose of this experiment is to study the key measures for increasing production under medium to upper fertilizer and water conditions, to stabilize the mu production at about 7000 kg and to make the annual amplitude less than 20%. Test set in Qingtongxia Guang-style commune garden brigade, aged 15 years, a density of 6 × 7 meters. Poor soil, soil layer 60 to 85 cm, there are coarse gravel layer. 0 ~ 20 cm soil layer pH8, organic matter 0.87%, total nitrogen 0.0486%, total phosphorus 0.073%, total potassium 2.64%, calcium carbonate 10.6%. In the autumn of 1976, Chen turned to soil and formally started the experiment in 1977, ending in 1982. Now the result is summarized as follows.