随着间套面积的迅速发展和复种指数的不断提高,肥料不足问题越来越显得突出。据在丹凤、商县川道调查,有的队三分之一的面积白茬下种。为了解决小麦底肥问题。1975年在回茬玉米行间套种柽麻,8月17日翻压,10月种小麦。试验在商县柿园子大队五队,平地,砂壤土,回茬玉 With the rapid development of the intercrop area and the rising of multiple cropping index, the problem of insufficient fertilizers becomes more and more prominent. According to Danfeng, Shangxian Chuan Road survey, one-third of the area under the white stubble species. In order to solve the problem of wheat base fertilizer. In 1975, intercropping maize intercropping linen hemp, August 17 pressure, October wheat. Test persimmon sub-team in Shangxian County, flat, sandy loam, stubble Yu