“一调四改三同步”增产穗产技术是适于黑龙港地区普遍推广应用的综合性增产技术。这项技术的实质是“一调四改。”即调整种植业结构,改革传统的土壤耕作制度、灌溉制度、施肥制度及改变品种类型与播种期。通过运用“一调四改”技术,达到雨热季节,作物生长盛期和化肥追施的高效期三 “A transfer of four to three simultaneous” Spike production technology is suitable for the general promotion and application of Heilonggang area comprehensive stimulation technology. The essence of this technology is “one change four changes.” That is, adjust the planting structure, reform the traditional soil cultivation system, irrigation system, fertilization system and change the type and sowing period. Through the use of “a change four changes” technology, to rain and heat season, the peak crop growth and fertilizer topdressing period three