leaf rust resistance

例句：

1. 1. Thenew crop of trees is resistant to the disease.
   新品种的树木对这种病害具有抗性。
2. 2. To improve the plant's health, it needs to be sprayed with a chemical that resists leaf rust.
   为了提高植物的健康，需要用一种能抵抗叶锈的化学药剂进行喷洒。
3. 3.The farmers are using a fungicide to protect their crops from leaf rust.
   农民们正在使用一种杀菌剂来保护他们的作物免受叶锈的侵害。