Abstract: Rice seeds were coated with high-hydroscopicity seed coating material and sowed in dry-raisingseedling bed without seed-soaking and pregermination. The treatment of high-hydroscopicity resin seed-coatingmaterial can fornl a water-stored ball of about 1. 8 cm × 1. 5 cm × 1. 2 cm around seed and root, the ball has the abilities of absorbing, keeping and providing water. As the ball containing pesticide, germicide and plant regulatorand releasing slowly, it may afford a suitable surroundings for germination and seedling growth. The procedure cannot only enhance emergence and seedling rate, prevent diseases, pests and died seedlings, strengthen root system, improve seedling qualities, but also can scatter dry-raised seedlings with more soil, improve seedling-standing speed and resist to planting injury, increase the yield of dry-raised scattered-transplantation rice.

Key words: high-hydroscopicity resin, dry-raised seedling, scattered-transplantation rice , seed coating

摘要： 应用高吸水种衣剂对水稻种子进行包衣处理，不浸种不催芽直接播入旱育苗床，考查了它对种子的出苗、病虫害及死苗的防治、秧苗素质以及抛栽后立苗速度、抗植伤能力和产量形成的影响。高吸水种衣剂包衣处理在种子周围及秧苗根部形成了1.8 cm×1.5 cm×1.2 cm左右的“蓄水球囊”，不仅提高了种子出苗率、成秧率，有效地防止了多种病虫害及死苗的发生，壮大根群，提高了秧苗素质；而且实现了旱育秧苗根部带土抛植，提高了立苗速度和抗植伤能力，增加了旱育抛栽稻的产量。

关键词: 高吸水性树脂, 旱育秧, 抛秧稻, 种子包衣