What medicine should rice take before beginning of autumn?

Around 1 and in beginning of autumn (August 8), the heading and flowering period of rice is the key period to control pests and diseases:

I. Species of pests and diseases and their control methods

1, stem borers and planthoppers: 250-300ml of 6% cartap aqueous solution or 80-100ml of 40% chlorpyrifos or 80ml of 20% abamectin-zophos EC are used per mu, and 40g of 20% chlorpyrifos or 10% imidacloprid is added per mu.

2. Sheath Blight: 10% jinggangmycin 200-300ml/ mu.

3, false smut: 300 ml of 12.5% aqueous solution of wenquning per mu.

4. Rice blast: 20% tricyclazole100-150g or 40% isoprothiolane100-150g per mu.

Second, spraying time and drug selection

1. Ear-breaking stage: 10% field rice ear-breaking, spraying cartap+imidacloprid+jinggangmycin+ventolin+tricyclazole.

2. Full heading stage: 90% of the rice heads in the field (that is, about 5 days after the first spraying), and five chemicals of chlorpyrifos+imidacloprid+jinggangmycin+wenquning+isoprothiolane are sprayed.

3. After flowering: 90% of the rice ears have blossomed in the field (that is, about 5 days after the second spraying), and five pesticides such as abamectin, zophos, chlorpyrifos, jinggangmycin, ventolin and isoprothiolane were sprayed.

Third, matters needing attention

1, spraying time: it is best to spray at 2-4 pm in windless weather, and it is best not to spray in the morning.

2. Water spraying: Water spraying should be sufficient, generally 40-50kg per mu, to prevent phytotoxicity.

3. Pharmaceutical requirements: authentic and efficient drugs must be selected to prevent exaggerated "fake drugs" and "new drugs" from being produced and not registered by irregular large manufacturers. At the same time, choose pesticides once to prevent insects from developing drug resistance.

4. Special weather: In case of low temperature and rainy days, it is necessary to increase the dosage or control sheath blight and false smut once.

5. Spraying fertilizer: Generally, it is not necessary to spray fertilizer after heading and flowering, but potassium dihydrogen phosphate can be sprayed once after flowering.