摘要
对影响黄冠梨鸡爪病的因素进行了研究和分析。结果表明,施用钾、氮、磷化学肥料均加重病害发生,其中钾肥影响最大;高接树果实发病率显著高于定植树;长果枝结果的果实发病重,短果枝发病轻;使用梨果膨大剂,果实发病时间提前15d;近成熟期较大降雨明显加重该病的发生;果实袋类型对该病的发生影响不明显。
Investigation was made on the ocurrence of Jizhua disease of Huangguan pear. The results shows that application of K、P、N fertilaizers increase the ocurrences of the disease, among which the K fertilizer increase the most. Fuits in the long brenches were more likely to have the diseaes than that in the short brenches. Trees that obtained by high brench shiftting were more likely to have the diseaese than the original ones. Rainning in the near mature stage also increase the ocurrence of the diseaes. Other factors related with the ocurrence of the diseaes were also reported.
出处
《河北农业科学》
2007年第1期29-31,共3页
Journal of Hebei Agricultural Sciences
关键词
黄冠梨
鸡爪病
研究
Huangguan pear
Jizhua disease
Research
