Control of rice leafminer flies

After the rice planting is over, it is also the occurrence period of leafminer flies. After rice planting this year, the temperature is low, often at 8-19 °C, which is not good for rice seedlings, and leafminer fly eggs have been found in the plots, which must be paid attention to and effectively controlled.

Leafminers belong to the diptera family , which feed on the flesh of the leaf by larvae moths , leaving two layers of epidermis , forming white linear irregular stripes. When there are more larvae in the leaves, it causes the leaves to wither and yellow, affecting the normal growth of rice. When it is serious, the whole rice plant is white and rotten, and then the whole plant dies, which is seriously harmful.

The occurrence of rice leafminer flies is also related to the quality of rice seedlings and the depth of irrigation. The quality of rice seedlings is good, the seedlings are slow and fast, and the rice leaves are upright, which is not conducive to the laying of eggs by adult leafminer flies, so it is not conducive to leafminer flies. On the contrary, the quality of seedlings is weak and the water layer is deep, resulting in the leaves being flattened on the water surface, which is most conducive to leafminer fly spawning, followed by harm.

The control methods of rice leafminer fly, in addition to cultivating strong seedlings and carrying medicines before planting seedlings, one is that the water layer should implement water management, frequent irrigation and shallow irrigation, and timely drainage of water depth; the second is to remove weeds around the field and eliminate insect sources. The third is once found, 40% oxidized Leguo 75-100ml/mu, sprayed on water.