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白叶枯病[Xanthomonas oryzac(uyed-a ot Iahiama)Dowson]大流行的年份,氮肥是影响发病的一个重要因素。过去有的学者研究了氮肥水平对品种抗病性的影响,以及氮素营养与细菌增殖的关系,但均未涉及到氮、磷、钾配合和分别使用与品种抗病性的关系。为此,我们进行了肥料种类和用量与品种抗病性关系的研究,希望找出既能高产又能抑制病情的施肥指标及其机制,为水稻稳产高产提供条件。1978年进行了预备试验,本文是1979年和1980年的研究结果。
Nitrogen is an important factor in the pathogenesis of the year of the pandemic [Xanthomonas oryzac (uyed-a ot Iahiama) Dowson]. Some scholars in the past studied the effect of nitrogen level on the disease resistance of the cultivars and the relationship between nitrogen nutrition and bacterial proliferation. However, they did not relate to the relationship between the combination of nitrogen, phosphorus and potassium and the disease resistance of cultivars. To this end, we conducted a study on the relationship between the type and amount of fertilizer and the disease resistance of the varieties. We hope to find the fertilization index and its mechanism that can both produce high yield and inhibit the disease, and provide the conditions for stable and high yield of rice. Preliminary tests were carried out in 1978, and this article is the result of 1979 and 1980 studies.