前言侧条施肥的研究已在长野县和滋贺县进行,结果表明了此法对水稻生产和水质保全的效果是明显的。虽然此法现在的实施面积还不过4.3％(1986年),但无论在高寒地带还是在平源地带都在扩大着。86年比85年大约增加了50％,侧条施肥机的台数累计大约达9000台,约占全国总数的40％,可见在东北地区的普及率之高(见表1)。 Preface The study of sideline fertilization has been conducted in Nagano Prefecture and Shiga Prefecture and the results show that the effect of this method on rice production and water quality preservation is significant. Although this law is still not implemented at 4.3% (1986), it is expanding both in the alpine zone and in the Pingyuan zone. In 1986, the number of side fertilizers increased by about 50% from 1985, and the number of side fertilizers totaled about 9,000 units, accounting for about 40% of the national total. This shows that the penetration rate in Northeast China is high (Table 1).