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我场位于赣北红壤丘陵地带,自一九五七年建场以来,开发利用红壤丘陵五千余亩,种植桑树,为国家共生产蚕茧五十余万斤。红壤酸性重,有机质少,表土板结,透水性差,抗旱能力低;降雨后,雨粒打击表土,土壤易分散,土肥容易流失。农民形容为“晴天一块铜,雨天一包脓”。不利于桑树生长,桑叶产量很低。为了改变这种状况,合理开发利用红壤,加速蚕桑事业的发展,我们于一九七二年对各种类型的桑园进行调查。情况是山脚的枝条高度(81厘米)比山顶的枝条高度
My field is located in the red soil hilly areas in northern Jiangxi Province. Since its establishment in 1957, it has developed and utilized more than 5,000 acres of red soil hills and mulberry trees and produced more than 500,000 kg of cocoon for the country. Red soil acidity, less organic matter, topsoil knot, poor water permeability, drought resistance; rain, rain particles hit the topsoil, soil easily dispersed, easy to lose soil fertilizer. Peasants described as “a piece of sunny bronze, pudgy rain package.” Not conducive to mulberry growth, mulberry yield is very low. In order to change this situation and to develop and utilize red soils reasonably to speed up the development of sericulture, we investigated various types of mulberry fields in 1972. The situation is the height of the branches (81 cm) at the foot of the hill than the height of the branches of the hill