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针对轻砂潮土区长期实行小麦-玉米或大豆一年二熟和小麦/玉米-红薯两年三熟制,种植方式单一,复播重茬,自然资源及土地资源未能合理利用,经济效益不高,生产效益较差的实际,“七五”期间在调查研究的基础上,总结出了一套适宜于轻砂潮土区的集约经营的种植模式。①小麦/菠菜/大蒜或洋葱-玉米/大豆采用8.7尺为一带,种4耧小麦,小麦行距0.6尺,小麦品种为徐州211或郑州79201或郑引一号。每亩播量6-8公斤,在小麦播种时先将菠菜籽撒种麦的空档内,然后再播种小麦,在留1.5尺的空档上种大蒜或洋葱。小麦收前10-15天在空档上套
Aiming at the long-term implementation of double cropping of wheat-corn or soybean and double-cropping of wheat / corn-sweet potato in light-saline soil area, the planting method is single, the cropping and cropping are repeated, the utilization of natural resources and land resources can not be properly utilized, and the economic benefits are not High and poor production efficiency. On the basis of investigation and study during the “Seventh Five-Year Plan” period, a set of intensive planting mode suitable for light-moisture area was summarized. ① wheat / spinach / garlic or onion - corn / soybean with 8.7 feet for the area, planting 4 耧 wheat, wheat spacing of 0.6 feet, wheat varieties for Xuzhou 211 or Zhengzhou 79201 or Zheng 引号. Sowing 6-8 kg per acre, spinach seeds are sprinkled into wheat in the sown area prior to sowing, then sowing wheat and planting garlic or onions at a 1.5-foot gap. 10-15 days before the close of the wheat set in the gap