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1973年我所在红壤丘陵山地进行宫川早生温州蜜柑密植试验。栽植密度包括每亩60株(11尺×9×9),80株(11尺×8×7.5),100株(11尺×8×6),120株(10尺×6×6),240株(5尺×5)五种不同处理。每种密度栽一区,每亩60株的面积为1.53亩,80株的1.46亩,100株的1.47亩,120株的3.25亩,240株的1.37亩,试验地共计9.64亩(实际利用面积9.08亩)。于1973年3月17～18日定植,全部成活,并且都抽生了三次梢,其中有60%抽生了四次梢,已具备了幼树的雏形。现将第一年柑桔培育经过与情况小结如下。
In 1973, I was in the hilly red soil in Miyagawa early mandarin close planting test. The planting densities included 60 lines (11 feet × 9 × 9), 80 lines (11 feet × 8 × 7.5), 100 lines (11 feet × 8 × 6), 120 lines (10 feet × 6 × 6), 240 Strain (5 feet × 5) five different treatments. The area planted with 60 plants per acre is 1.53 mu, 1.46 mu for 80 plants, 1.47 mu for 100 plants, 3.25 mu for 120 plants, and 1.37 mu for 240 plants, with a total of 9.64 mu (actual utilization area 9.08 acres). In 1973 March 17 to 18 colonization, all survived, and have been pumping three shoots, of which 60% of pumping four shoots, already have the saplings of the prototype. Now the first year after the cultivation of citrus and the situation are summarized below.