The best time to apply rice crevasse medicine

The best time to apply rice breaking medicine is 5-7 days before rice breaking.

The period when rice sticks out from the rice bud is called "dormancy period". After dormancy, rice enters heading stage from booting stage. It is generally believed that 30-50% of ears can be used as ear-breaking stage. The dormancy period of rice is the key period for increasing rice production and controlling pests and diseases.

The pillows of the first leaf and the second leaf must be flat (that is, the pillows of the first leaf and the second leaf are flat), but this time is not the best time to apply pesticide. 5-7 days before the rice shell is broken, that is, 3-5 days after the first leaf and the second leaf are flat, this time is the key period to control pests and diseases. When the inverted one-leaf pillow is 4-5 cm higher than the inverted two-leaf pillow, it is about 5 days before the break.

Introduction of rice crack drug

Rice diseases: mainly control false smut, rice blast and sheath blight. In rainy weather, attention should be paid to the prevention and control of false smut. If it is japonica rice and other varieties, the prevention and control of rice blast should not be underestimated. The control agents can be benzoxazole+pyraclostrobin, trifloxystrobin, tebuconazole, etc. Tricyclazole is recommended to prevent rice blast.

Rice pests: mainly control rice planthoppers and rice leaf rollers. It is recommended to control rice planthoppers with nitenpyram and pymetrozine, and control rice leaf roller with indoxacarb or emamectin benzoate plus chlorantraniliprole. It is suggested to apply pesticide after 4 pm when rice is heading and flowering, so as to avoid applying pesticide when flowering. In case of rainy weather, it will not affect the heading and fruiting of rice.