前言日本北海道地区在1925年时水稻直播栽培面积曾占80%。在低温条件下,直播栽培的水稻由于受到生育初期出芽率低,成苗稳定性差的双重影响,易致大田缺株增加,生育延迟,成熟期参差不齐,和移植水稻相比较,终因低产而阻碍其普及。近年来已基本消失殆尽。前几年,寒冷地带单季稻低成本栽培技术体系作为水稻栽培的专题内容,重新予以确定。水稻直播栽 Foreword In 1925, Japan’s Hokkaido region had a direct seeding area of ​​80% of rice. Under the condition of low temperature, the direct-seeded rice has the dual effects of low germination rate and poor seedling stability at the early stage of growth, which easily leads to the increase of the lack of plants in the field, delayed birth and uneven maturity. Compared with the transplanted rice, Hinder its popularity. In recent years, it has basically disappeared. A few years ago, low-cost cultivation techniques for single-cropping rice in cold regions were re-identified as topics for rice cultivation. Direct-rice planting