First, Trichogramma technology to prevent corn borer Hybrid Stepper Motors,Brushless DC Motors,Linear Motor,Gear Motor,Step-Servo Motors,Brushless Motors Changzhou Satidi Import and Export Co., Ltd. , https://www.czguanjiechuck.com
This technology is conducive to Trichogramma egg laying in the host pests corn quail eggs to complete its development and eliminate pest eggs, thus controlling the number of pests, to achieve control purposes. It is an ideal measure to control corn borer in large areas.
Technical points:
1. Release time. In the early stage of spawning of the corn borer to the height of the egg, or when the overwintering rate of the adult corn borer is 20%, the first time the insect is released after 10 days. The first generation is about July 10, the 2-3 generation period is around June 20, and the second time is between 5-7 days, with a total of 2-3 times.
2. Release quantity. 15,000 heads per mu, released in 2-3 times. That is, the first 07,000, the second 0.8 million, or the first 0.4 million, the second 0.6 million, the third 0.5 million.
3. Release points. Set 1-3 release points per acre. In other words, 20, 15 and 10 ridges were used as the first laying ridge, and then one ridge was placed at 40, 28, and 20 ridges respectively. The first releasing point of each laying ridge was at the top of the ridge. 20 steps, followed by 1 release point every 40 steps.
4. Release method. Select one corn plant at the place where the bee is placed, and place the bee card or the bee-keeping device containing the bee on the vein on the back of the middle blade.
Precautions: The bees should be released to the field in time and be released in case of light rain. When the rain is heavy, the bee card should be stored in a cool place. Do not put it together with pesticides.
Appropriate area: North China corn area.
II. Technology of Trichogramma in Controlling Rice Planthopper and Rice Leaf Roller
The eggs were produced in the eggs of rice borer borer and rice leafroller C. rapae, and the development of feathers and fly out was completed in the host eggs, and the pest egg parasitism was actively pursued in the field to eliminate the habit of the eggs. To reduce the number of pest populations and reduce the damage.
Technical points:
1. Release time. According to the monitoring results of insect pests, they were released from the peak of wintering moth and rice leaf roller from the peak period of immigrants.
2. Put the amount and method of bees. Each bee puts 8000-10000 heads. Set 6-8 beddings evenly per acre, with intervals between 8-10 meters. Put the bee card in the bee-feeder or inverted paper cup, hang it on a wooden stick or bamboo raft and insert it into the field, or hang it on the top blade of the plant to avoid direct sunlight on the bee card. In the hot season, bees should be placed under the canopy to prolong the life of Trichogramma. The height of the bee card should be at the same level as the top of the plant, or 5-10 cm above the top, and be adjusted as the plant grows.
3. Note. If it is necessary to save the Trichogramma bee card for a short time, the bee card should be stored in a refrigerator at 2°C-4°C, and the bee card should be taken out at room temperature four days before each bee release (depending on temperature). During the period of bee-keeping, pesticides should be avoided to ensure the control of Trichogramma beetle. When the amount of larvae in the field reaches the control index, pesticide application measures can be adopted to control the damage.
Suitable area: National rice area.