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近年来,据实践观察和多方面的试验材料报道表明,杂交水稻繁殖制种由于较大幅度施用“九二○”(亩用量超过12克或15克以上),其种子质量如发芽率、耐贮性方面将有明显降低趋势,在生育后期也易诱发大量病害如叶鞘腐败病、稻粒黑粉病等。为此,作者近年来通过大量了解国内本行业先进技术信息,并根
In recent years, according to practical observation and reports from various experimental materials, it is indicated that the hybrid rice seed production due to more substantial application of “920” (more than 12 grams or more than 15 grams of mu), the seed quality such as germination rate, resistance Storage will have a significant downward trend in the later stages of growth are also easy to induce a large number of diseases such as leaf sheath rot disease, rice powdery mildew and so on. To this end, the author in recent years through a lot of understanding of domestic industry advanced technology information, and roots