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Which common plants are most prone to aphids? (If adopted, send wealth value! ! )
Aphids' favorite plants are plants with tender stems and leaves, and the plant juice has no peculiar smell, so vegetables eaten by ordinary people will be harmed by aphids. First place in Cruciferae. Among them, rape is the first, followed by Chinese cabbage, radish, cabbage, cauliflower, mustard and so on. The second place is Gramineae (mainly because of its wide planting range), among which wheat is the first, corn is the second and rice is the third. The third place should be Rosaceae. The young leaves of Rosaceae plants have a special fragrance and no peculiar smell, which can basically be used as feed for livestock. Therefore, it is especially favored by aphids, such as roses, roses, strawberries, peaches, pears, apricots and plums. The fourth place should be compositae, and compositae plants are also the favored objects of aphids. Basically, most compositae plants are harmed by aphids. Finally, other species: acacia, Sophora japonica, poplar, celery, cotton and so on, are also very popular with aphids. Aphids are located in warmer places in the south in winter, and there are many hosts, which are scattered and difficult to find. However, spring often breaks out earlier and more violently. There are not many hosts that aphids can rely on in winter in the north, mainly some wintering plants with green leaves in winter, such as rape, wheat and Chinese cabbage. Moreover, when the temperature is low, aphids do not overwinter like adults, and often lay eggs on branches and grass roots, so that they will hatch with the germination of plants in spring. At this time, aphids will be widely distributed, and it is not easy to focus on prevention and control. Control method of aphids in autumn: 1. Combined with plant pruning, branches with eggs are cut off to eliminate the source of insects. 2. The oviposition peak of aphids can be controlled by spraying chemicals before overwintering. If you use 1.2% bitter? Tobacco EC is 800- 1000 times, or 6% imidacloprid EC is 3000-4000 times, or 5% acetamiprid EC is 5000-6000 times, or 50% phoxim EC is 800- 1000 times, or 2.5% triadimefon EC is 2500-3000 times. Omethoate is also a good medicine to control aphids, but it may cause phytotoxicity to Rosaceae plants such as peach blossom, elm leaf plum and begonia. Therefore, we should pay special attention to it when using it in garden plants, and try not to use it. 3. It is also an effective control method to pay attention to the protection and utilization of various natural enemies, such as ladybugs, syrphids and grassridges. Don't use broad-spectrum pesticides in the incubation period of natural enemies. 4. Using 3% carbofuran granules per square meter 100g to control aphids, or directly applying it to the rhizosphere of flowering shrubs, can also effectively control aphids. Honey! You said to get extra points! Don't joke that adoption has already scored 20 points!
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