The symptoms of citrus powdery mildew appear as white mold on the positive and negative sides of the young leaves. Most of them are nearly round and have loose appearance. The mold often spread outward from the center. The leaf tissue below the mold layer was initially water-stained and later .......

1. Rotation is carried out in rotation with the solanaceous crops, preferably on paddy-upland rotation for 1 to 2 years.

2. Cultivate disease-free strong seedlings and increase plant disease resistance. With seedling-free seedlings, the former seedlings were not planted on land plo.......

Fat pigs can eat and sleep, and can eat well. Most farmers are buying full-priced feed to feed pigs. Not only are they expensive, but their effects are not good. Although pigs eat a lot, they are not very healthy. Why is that? That's because pigs are omnivorous animals. Because the fee.......

Watershed watermelon locust is a common hazard, not only directly sucking juice causing serious water loss and malnutrition of the plant, but also induce other diseases, often after harvesting 1 to 2 batches of melon will be difficult to form the output, has become the main impact on watermelo.......

1. White flocculent mycelium appears on the surface of bag material

Reasons: 1 bacteria bag moisture content is low, the air temperature during the moisturizing bacteria stage is insufficient. 2 After the bacteria were inoculated, the concentration of carbon dioxide in the shoots w.......

The humidity and temperature in the air are as ubiquitous as everywhere. The temperature of the yellow plum in the south is not high, and the humidity is very high. People feel sultry and uncomfortable. At the same time, damage caused by moisture and mold to metal oxidation occurs at any time u.......