There are two types of green onions, one is physiological and the other is caused by diseases. If there is no disease spot on the onion leaves, this is a physiological dry tip, which can be sprayed with subtilisin, penicillin and other trace fertilizers to ease. The dry tip caused by the disea.......

There are many types of vegetable pests, but they can be classified into three categories: sucking juice, eating leaves, and drilling. The living habits of each type of pest are different. According to the living habits and harmful habits of the pests and the characteristics of the host.......

　　洗药机处理中药前处理工序一般包括药材的挑选、洗药、润药、切药、干燥、粉碎等工序；提取å.......

The roots and leaves of the Brassica plant are cruciferous. The roots and leaves can be used medicinally. The plant is a suitable Chinese herbal medicine with a strong adaptability, warm and sunny environment, cold-resistant, in addition to low-lying water and heavy soil, China Both north .......

Gibberellic acid is a broad-spectrum plant growth regulator, which can promote the growth and development of crops, make them mature earlier, increase yield and improve quality; quickly break the dormancy of seeds, tubers and bulbs, promote germination; reduce buds, The shedding of flowers, be.......