Weeds seriously endanger the normal growth of crops and have been classified as a natural disaster in agriculture. In agricultural production, the use of biological control techniques such as poultry, fish, insects, fungi and plant clonality to control weeds can not only reduce the environmental pollution of herbicides. Maintaining the ecological balance of nature is also conducive to the production of “green†agricultural products without pollution and without residue. In recent years, the use of biological methods to control farmland weeds has increasingly attracted the attention of all countries. The biological control technology of farmland weeds is now introduced as follows.
1. Use poultry and fish to weed: use poultry and fish to remove weeds and convert weeds into organic feed for poultry and fish. Some places in rural areas of China have the habit of weeding ducks (goose) in aquatic vegetable fields. . After the plants are grown in aquatic plants (such as sputum white), the ducks can be eaten into the paddy fields to eat some weeds. In addition, fish farming and weeding in the water can also receive good results. For example, grass carp has a large amount of weeds, and it has an inhibitory effect on more than 20 kinds of weeds in 15 families of Baitian. In high-stalked dryland vegetable fields, ducks are rushed into the fields to feed weeds, and good weeding effects can also be obtained.
2. Using insects to kill grass: Aconite is a common weed in vegetable fields. It has been found that the larvae of the scented aconite can be stalked along the leaves of the scented aconite leaves to the heart of the leaves. Into the tender heart, so that the heart leaves the green wilting and die, and then into the bulb, bite off the transport organization, causing the fragrant aconite to die. In addition, among the insects, there are also the winged-winged moths that like to eat the flat-weed weeds, the brown-yellow yellow-leafed beetles that specialize in the weeds, the spotted water mites that feed on the oyster vegetables, and the sharp-winged scorpion It has a good control effect on farmland weeds and has a very broad development prospect. It has a good control effect on farmland weeds.
3. Using fungi to kill grass: Some fungi have good control effects on weeds. The biological herbicide "Lubao No.1" developed by China itself is a biological preparation that uses fungi to control weeds. When there are weeds in the soybean field, spray 20 to 30 million Lubao bacteria per liter of spores, spray on sunny or late days or cloudy days and light rain days. The spores can absorb water and sprout, grow infested silk, penetrate the epidermal tissue of the silk to enter the inside and secrete toxic juice, so that the dodder can die. In addition, parasitic rust and powdery mildew can inhibit refractory weeds such as leeks, red cornflowers, and convolvulus, which are difficult to eradicate. Rust can deform the stems and leaves of the cockroaches until they stop growing. Caused 80% of the amnesty to die.
4. Using plant to kill grass: In the control of farmland weeds, the plant's heterogeneous traits are used to effectively kill some weeds. For example, some cucumber varieties can inhibit the growth of white mustard and valerian; Vegetables can reduce the harm of looking at Mai Niang.
1. Use poultry and fish to weed: use poultry and fish to remove weeds and convert weeds into organic feed for poultry and fish. Some places in rural areas of China have the habit of weeding ducks (goose) in aquatic vegetable fields. . After the plants are grown in aquatic plants (such as sputum white), the ducks can be eaten into the paddy fields to eat some weeds. In addition, fish farming and weeding in the water can also receive good results. For example, grass carp has a large amount of weeds, and it has an inhibitory effect on more than 20 kinds of weeds in 15 families of Baitian. In high-stalked dryland vegetable fields, ducks are rushed into the fields to feed weeds, and good weeding effects can also be obtained.
2. Using insects to kill grass: Aconite is a common weed in vegetable fields. It has been found that the larvae of the scented aconite can be stalked along the leaves of the scented aconite leaves to the heart of the leaves. Into the tender heart, so that the heart leaves the green wilting and die, and then into the bulb, bite off the transport organization, causing the fragrant aconite to die. In addition, among the insects, there are also the winged-winged moths that like to eat the flat-weed weeds, the brown-yellow yellow-leafed beetles that specialize in the weeds, the spotted water mites that feed on the oyster vegetables, and the sharp-winged scorpion It has a good control effect on farmland weeds and has a very broad development prospect. It has a good control effect on farmland weeds.
3. Using fungi to kill grass: Some fungi have good control effects on weeds. The biological herbicide "Lubao No.1" developed by China itself is a biological preparation that uses fungi to control weeds. When there are weeds in the soybean field, spray 20 to 30 million Lubao bacteria per liter of spores, spray on sunny or late days or cloudy days and light rain days. The spores can absorb water and sprout, grow infested silk, penetrate the epidermal tissue of the silk to enter the inside and secrete toxic juice, so that the dodder can die. In addition, parasitic rust and powdery mildew can inhibit refractory weeds such as leeks, red cornflowers, and convolvulus, which are difficult to eradicate. Rust can deform the stems and leaves of the cockroaches until they stop growing. Caused 80% of the amnesty to die.
4. Using plant to kill grass: In the control of farmland weeds, the plant's heterogeneous traits are used to effectively kill some weeds. For example, some cucumber varieties can inhibit the growth of white mustard and valerian; Vegetables can reduce the harm of looking at Mai Niang.
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