临江沿海地区的热量资源,一年两熟有余三熟不足。为充分利用温光资源,发挥间套复种的技术优势,提高全年粮食产量和经济效益。90年代初起,我们开展了旱粮三熟制亩产“双千”(千公斤粮、千元产值)技术的研究,累计试验,示范近4万亩次,取得了明显的效果。1 三熟“双千”的主要模式1.1 小麦(蚕豆)+绿肥/春玉米+赤豆/旱稻(高粱、山芋)即在行距为1.33m组合中,秋播种1行小 Linjiang coastal areas of calorific resources, more than two crops a year more than three shortages. In order to make full use of the resources of Wen-Guang, give play to the technical superiority of inter-cropping and increase the grain output and economic benefits for the whole year. Since the early 1990s, we have carried out research on the technology of “double-thousand” (thousand kilograms of grain and thousands of yuan of output value) of dry land for three crops per mu of dry land. The cumulative test and demonstration of nearly 40,000 mu have achieved remarkable results. 1 The main mode of “three thousand” double cropping 1.1 wheat (broad bean) + green manure / spring corn + red bean / upland rice (sorghum, sweet potato) That is the row spacing of 1.33m combination,