施肥对核桃黑斑病田间防控作用研究

Effect of Fertilization on the prevention and control of Black spot Disease of walnut in Field

摘要:

通过田间施肥措施,观察核桃叶片指标(长度、宽度、厚度、重量)的变化情况与黑斑病病害侵染情况,分析其关联 程度。 结果显示,施肥后叶片长度增量和病害侵染率变量呈显著性正相关,叶片宽度增量和病害侵染率变量呈极显著性正 相关,叶片厚度和重量变化与病害侵染均不相关。 在田间防控核桃黑斑病过程中,施肥可以引起叶片变大,可抵抗病害侵 染,延缓侵染程度。

Abstract:

By taking fertilizing measure in the field, the change of walnut leaf index (such as length, width, thickness and weight) was observed, as well as the infection of black spot disease , and the correlation degree between them was ana- lyzed. The results showed that there was a significant positive correlation between leaf length increment and disease infec- tion rate, and a extremely significant positive correlation between leaf width increment and disease infection rate after fer- tilization . The changes of leaf thickness and weight were both not related to the disease infection . In the prevention and control of walnut black spot disease in the field, fertilization can cause the leaves to grow larger, resist the disease infec- tion,delay the infection degree .