The soybean cyst nematode is parasitized in the cortex of the root and absorbs the organic nutrients that the plants on the ground transport to the roots, so that the soybean root loses its ability to absorb water and inorganic salts, which in turn reduces the ability of the root to absorb and…

Pre-planting garlic seeds are divided into varieties, garlic, garlic cloves, and digging trays.
Choose garlic: pick the garlic big and firm, shiny white skin, without the disaster, freezing disaster, no pests, moldy garlic. Garlic should be large and uniform. The diameter of 4 cm or more …

Release date: 2007-04-12

Endoscopic radiofrequency ablation and stent placement for unresectable biliary and pancreatic tumors in order to inve…

First, the fruit storage before the warehouse disinfection, disinfectant to CT-efficient warehouse disinfectant is better, the library temperature should be reduced to 3-4 °C before the fruit into storage.

Second, choose 89 ripe, fruit fully colored and not yet softened fruit ha…

1. Triangle belt slipping If the belt or pulley adheres to oil, use gasoline to clean; if the belt is too loose, adjust the tightness of the belt according to the regulations; if the belt wear is too large, you should replace the new one.

2. Clutch slipping If the active piece, pre…

Pond requirements. Adequate water supply, convenient drainage and drainage. The area generally does not exceed 4 acres and the water depth is 1-1.5 meters. The bottom of the pool is less silt.

Water quality conditions. Green shrimp are particularly sensitive to toxic chemicals such as…

July-August is the peak period of growth of P. vannamei. At this time, the water temperature is high, the shrimp grows fast, the food intake is large, the excrement is large, the water quality is easily deteriorated, and it is easy to cause flooding ponds and various diseases. In order to ensu…

In recent years, the occurrence of pests, root-knot nematode diseases, and seedling diseases in Yam yam has been increasing, which has seriously affected the yield and quality of yams. At present, it is the yam seeding season. To effectively control pests and diseases, the following points sho…

First, buckle time and temperature and humidity control

At the end of November, the nectarine forced defoliation to start the plastic film shed, cover the shade of grass during the day, and uncover the ventilation of the mulch in the evening, and maintain the low temperature of 0°C to 7…

In 2006, Zhaoqing Sihui Huang Hongyu, a fish farmer, raised 50 mu of water and 8 ponds with four major fish (mainly raising grass carp) and soft-shelled turtles, and invested 70,000 yuan in feed for grass carp. By mid-January 2007, the output value had been obtained. 220,000 yuan, there are 10…

Abstract: The temperature control valve is the main adjustment device for the heating system flow adjustment. If a heating system does not have a temperature control valve, it cannot be called a heat metering and charging system. This paper introduces the structure and principle of the temperat…

The artificial breeding technology of sea cucumber is not yet mature, and it is currently mainly released and released. The main technical measures are: 1 Choose a good discharge site, that is, the sea conditions of the discharge site should be suitable for the living habits of the seedlings. …