Jiang Nong butterfly control
1. Morphological characteristics of adults: black-brown body wings, forewings with five gray-and-white spots, larger spots below the middle chamber. There is a big white spot in the middle of the rear wing. The egg is hemispherical, the top is flat, and the contact with the leaf surface is in the shape of a hat brim, slightly wrinkled, and there are more than 50 raised fine lines on the side. After the 3rd instar, two crescent-shaped maculae appeared on both sides of the sixth dorsal line of the abdomen, and the valves were white. The pupa is long spindle-shaped, yellowish green, covered with white wax powder.
two。 Life habits and occurrence regularity
Ginger butterflies occur for 3 or 4 generations a year, overwintering as pupae in grass or dead leaves. Eclosion and spawning in the first ten days of April of the following year. The larvae began to cause damage in the middle of May, and the damage was the most serious from July to August. The female ginger butterfly lays eggs on the back of the leaves, and each female can produce 20 eggs and 34 eggs. After hatching, the larvae climb to the edge of the leaves and spit out silk to fix the leaves. After the 3rd instar, the leaves can be rolled into a cylindrical leaf bud and transformed into plants sooner or later. The mature larvae pupate on the back of the leaves.
3. Prevention and cure method
(1) Clean the garden field: after ginger harvest, clean the false stems and leaves in time, burn or rett to make fertilizer, in order to reduce the source of insects.
(2) disinfestation: artificial removal of insect buds.
(3) Pesticide control: spray control of larvae at low instar, it can be sprayed with 2000 times of 25% quinathion EC or 20% fenvalerate EC, which has better effect.
- Prev
Processing technology of dried ginger slices
Fresh tender ginger can be processed into dry products-dried ginger, because ginger can be further processed into other products, the processing techniques are as follows: 1, raw materials: select tender ginger, remove rotten ginger, wash clean. 2. Peeling: using the mechanical peeling method to remove the thin skin, several rubber heads can be installed in a grinding wheel with a diameter of 1 meter, and the clean pieces of ginger can be poured into the grinding wheel. When the grinding wheel rotates, the skin of the ginger will be wiped off, and then the ginger skin will be washed away with clean water. 3. Slicing: press the ginger pieces to a certain thickness with a manual or slicer.
- Next
Selection of Color Pepper greenhouse and cultivation techniques
The color sweet pepper has red, golden yellow, purple, light purple, cream and other colors, its fruit shape is square and large, the skin is smooth, the pulp is thick, the pulp thickness is 5 to 7 mm, the weight of a single fruit is 200 to 400 grams, up to 500 grams; taste sweet and crisp, high nutritional value, suitable for raw food. Color sweet pepper is resistant to low temperature, weak light and long growth period. In recent years, China has introduced colored sweet peppers from the United States, the Netherlands, Israel and other countries and planted them in the suburbs of Beijing and Shanghai with good results and rapid development in the whole country. Now its cultivation techniques are used in greenhouse.
Related
- Where is it suitable to grow horseradish in China? it is expected to see the middle altitude horseradish in Alishan.
- How to prevent tomato virus disease reasonably? (Control methods included)
- Many people like to plant towel gourd on the balcony. What are the main points of this method and management?
- What crops can chili peppers be mixed with?
- Fertilization techniques and matters needing attention in Tomato
- What are the grafting techniques for peach seedlings in spring?
- Harm and control methods of root swelling disease of Chinese cabbage
- What are the pests of sweet potatoes? How to prevent and cure it?
- Symptoms, causes and Control methods of navel Rot in Tomato
- The cause of "Cucumber rotten bibcock" in Farmers' planting Cucumber and its Control Plan