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穗颈瘟仍然是晚稻生产中的重要问题,尤其在氮肥用量比较高的情况下更为突出。硅、镁肥料具有减轻稻瘟病的效果国外已有较多的研究,为了进一步明确硅、镁的防病效果及其适宜用量,于1975年进行了试验。供试品种晚粳农虎6号,6月28日播种,8月11日移栽,水育大秧。基肥每亩施草藁河泥6000斤,硫铵20斤;分蘖肥每亩施尿素20斤。硅肥用余姚铁合金厂的废料硅铁炉渣,镁肥用硫酸镁。处理共12种,小区面积3厘,重复三次,随机排列,每小区丛数、基本苗相同。其他田
Panicle blast is still an important issue in late rice production, especially in the case of high nitrogen fertilizer. Silica and magnesium fertilizer have the effect of reducing rice blast. Many studies have been done abroad. In order to further clarify the disease prevention effect of silicon and magnesium and their suitable dosage, experiments were carried out in 1975. Test varieties Late Japonica Nonghu 6, June 28 sowing, August 11 transplanting, watering Dayang. Basal fertilizer per acre Shihe River 6000 kg, ammonium sulfate 20 pounds; tillering fertilizer urea 20 kg per acre. Silicone use Yuyao ferroalloy scrap ferrosilicon slag, magnesium fertilizer with magnesium sulfate. A total of 12 species, the plot area of 3%, repeated three times, randomly arranged, the number of each plot, the same basic seedlings. Other fields