In the spring of fish farming, four

First, fertilization off: In the early spring when the pond water temperature is stable at 8 °C ~ 10 °C, that began to chase fertilization material to cultivate natural food in water. The amount of fertilization should be determined based on the quality of water, fertilizer, and fertilizer. G---

Yellow tip rot disease symptoms and prevention

Yellow-skin shoot rot, also known as yellow dead skin disease. In Guangzhou, Nanhai, Dongguan, Sanshui, Huizhou, Shantou and other places. Those who suffer from mild disease reduction will suffer no gains and even the entire park will be destroyed. The serious disease rate will reach 70-90%. Firs---