The first topdressing should be before flowering. The budding and flowering of fruit trees consumes large amounts of nutrients. If nutrients are not supplied at this time, the flowering period will prolong and the fruit setting rate will be reduced. Therefore, appropriate fertilizers should be.......

L, emulsion pesticide efficacy identification method (1) observation method: found in the pesticide bottle precipitation, layered flocculation phenomenon, this bottle can be placed in hot water, let stand for 1 hour, if the sediment decomposition, flocculation Disappeared, indicating that the .......

Patchouli is a natural medicine from Guangdong. For a long time, traditional cultivation has been carried out in Guangzhou, Gaoyao, Zhaoqing, Zhanjiang and other places. The current market price is around 12 yuan/kg. After joining the WTO, pollution-free cultivation and production are increasi.......

1. Common fertilizers Poinsettia is a nitrogen-potassium nutrient type and has a high requirement for nitrogen ratio. It is relatively easy to absorb potassium and requires a certain ratio of nitrogen to potassium. Due to the higher requirements for fertilization, current domestic and foreign .......

The economic value of strawberries cultivated in greenhouses is relatively high, but the production of deformed strawberries in greenhouses is more serious than open fields, and some can reach more than 30%, which affects the yield and quality of greenhouse strawberries, and reduces their econ.......

A. Breeding methods are roughly divided into two types: outdoor open and indoor closed. Outdoor open style includes ditch type, shed type, courtyard style, etc., let it in the protective ring, similar to growth and reproduction under natural conditions. Indoor enclosed culture can use earthenw.......

1 Production technical measures 1.1 Variety selection The selection of disease-resistant, high-quality and high-yield products with strong resistance to stress and good commercial quality. Ginger seeds are required to be hypertrophic, plump, light-colored, fresh, non-drying, not rot, unfrozen,.......

The selected plants had a good selection in the field, moderate inflorescences, and uniform plant height. The main traits were in accordance with the characteristics of the typical plant species. When the tomatoes on the 2nd to 3rd ear of the selected plant were completely mature, they were in.......

First, prevention, comprehensive prevention and treatment. Every year in the spring and fall, cows should be epidemic- and immunized. At the same time, large-scale disinfection inside and outside the venue should be carried out to ensure that the cattle body, cowshed, surrounding environment, .......

(1) Blind introduction of species selection. Some farmers have neglected the quality of chickens because of their low prices. For example, they often introduce some fragile and weak chickens from non-regular breeding farms or farmers; some simply pursue fashion and introduce some products that.......

First, Shallow Boiler 1. Select good seedlings. Shallow swill should be selected as a suitable variety for shallow water cultivation, such as Hainan Island and Wulian No.2. It is best to have more than 3-4 or more pods. The seedlings are required to be thick and vigorous, no pests, and no dama.......

Artemisia halodendron, commonly known as wormwood or basil. It can be planted for three seasons each year. It can be cultivated in spring and autumn and can be grown in the winter. It can be harvested in three quarters per season and yield about 1,500 kilograms per mu. First, open cultivation .......