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关于氮素肥料和其它矿物质肥料对苹果和梨黑星病的影响,已有不少资料报导(R.Geoffrion 1961;E.Booth1965,1966;R.Ross 1968;R.Burchill 1969;B.Lovelidgo1970;А.Ф.Константиново1970;М.И.Дементъева和В.Д.Свиридов 1974;И.М.Роцин 1974)。1973—1976年,我们在德涅伯罗彼得罗夫斯克(Днелролетровский)省的生产条件下,试验了矿质肥料的水溶液对黑星病子囊阶段的抑制和降低初侵染来源的作用。在早春进行铲除试验,所用的矿质肥料是8％的尿素、10％硝铵、10％的氮、磷复合肥料和15％的钾盐水溶液;在果树生长期进行防治时,所用的为上述肥料0.5％的水溶液。以浓度为1％的二硝甲酚(ДНОК)和
There are a number of reports on the effects of nitrogenous fertilizers and other mineral fertilizers on apple and pear scab (R. Geoffrion 1961; E. Booth 1965, 1966; R. Ross 1968; R. Burchill 1969; B. Lowvelgo 1970 ; А.Ф.Константиново1970; М.И.Дементъева and В.Д.Свиридов 1974; И.М.Роцин 1974). In 1973-1976, we tested the effect of aqueous solutions of mineral fertilizers on the suppression of the vesicular stage and the reduction of the source of primary infection under the conditions of production in the province of Dnepropetrovsk in the province of Днелролетровский. Eradication experiments were carried out in early spring. The mineral fertilizers used were 8% urea, 10% ammonium nitrate, 10% nitrogen and phosphorus compound fertilizers and 15% potassium salt aqueous solution. During the fruit tree growth period, the above fertilizers 0.5% aqueous solution. At a concentration of 1% of dinitresol (ДНОК) and