In the past ten years, the author studied, inspected, experimented, summarized, and promoted Tianma cover cultivation techniques in more than ten provinces and cities in Tianma Production Area, which enabled Tianma to increase production by 20% to 30%. Now introduce the principle and method of cove ......
First, the selection of species with strong resistance to disease, high temperature and high humidity varieties, such as high-yielding glutinous rice No. 1, No. 2, Jinlv Jialong and so on. Second, the selection of land, soil preparation, fertilization to select soil permeability, water permeabilit ......
1. Preparation before polyculture Before frog breeding, drain the pool water first, excavate too much silt, and disinfect it with quicklime or bleaching pond. The dosage of drug is the same as that of pond fish farming. After the toxicity of the drug disappears, 30-40 cm of water can be injected to ......
After ten years of scientific and technological breakthroughs, scientists in our country have discovered the mechanism of differentiation and regulation of pork adipocytes, and have made major breakthroughs in the use of biotechnology to control pork fat content. This study used cell biology, molec ......
I. Introduction 1. Biological characteristics 1. Morphological characteristics and distribution. Black crickets are elongated and flat. Body length is generally 20-30cm, weight 100-300g. The kiss is more pointed, the mandible is longer than the maxilla, and the two jaws, the vomer and the cheekbone ......
1, broodstock selection can be selected from September to October in the previous year or March-April of the year to choose broodstock, requires weight 30-50g, appendages complete, healthy and disease-free, strong activity, male to female ratio of 2-3:1. Male and female lobsters have obvious featur ......
In the summer, hot storms often hit crops, especially vegetables. According to the experience of agricultural technicians, the following work should be mainly done. Timely watering the affected vegetables or irrigating springs or cold wells. When the hot rain storms are over, it is best to organize ......
Combine harvesters are large-scale agricultural machines with a complex structure and large investment. They use a short time each year and have a long storage period. Therefore, after the completion of the operation, it is necessary to conduct timely maintenance of the storage so that it can maint ......
Japan's Hokkaido Agricultural Research Center cooperated with companies to cultivate low-temperature transgenic rice. Although tropical and subtropical rice does not adapt to the low temperature environment, rice seedlings will be able to increase their low-temperature tolerance accordingly aft ......
The conventional cultivation of green garlic in the Yangtze River basin is usually planted from September to October. The market is listed one after another in November. During the Mid-Autumn Festival and the National Day, the supply of garlic is in short supply. To enrich the off-season market for ......