How to control diseases and insect pests of rice in summer?

How to control diseases and insect pests of rice in summer? According to the trend analysis, rice diseases and pests focus on "three diseases" (rice leaf roller, rice planthopper, Chilo suppressalis, rice blast, rice false smut and sheath blight) in summer and autumn. At the beginning of September, the sixth (4) generation rice planthopper, the sixth (4) generation rice leaf borer, the third generation borer, double cropping late rice blast, rice false smut, sheath blight, bacterial blight and other diseases and pests were investigated and treated. 3. Around the middle of September, it mainly treated rice planthopper, investigated and treated other diseases and pests, and also treated panicle stage diseases such as grain blight and neck blast of double-cropping late rice. Pay close attention to the control of bacterial base rot and Sclerotinia sclerotiorum of single cropping late rice. The main results are as follows: 1. To strengthen field management, we should adopt water management measures such as shallow water tillering, timely and moderate roasting, alternating dry and wet at panicle stage, not cutting off water prematurely, and not applying nitrogen fertilizer and increasing phosphorus and potassium fertilizer to improve the stress resistance of rice and worsen the living environment of diseases and insect pests. 2. Main disease and pest control indicators of rice planthopper: 1000 young nymphs at tillering stage (more than 60% of brown planthopper) ~ 1500 (more than 60% of white-backed planthopper), 1500 young nymphs of 100 clumps from booting stage to full heading stage (over 60% of brown planthopper) ~ 2000 (over 60% of white-backed planthopper), and 2000 young nymphs after full heading stage. Rice leaf roller: 100 low instar larvae (tillering stage), 50 low instar larvae (booting stage); Chilo suppressalis: 100 eggs per mu; rice blast: leaf blast, spraying twice when diseased plants are found or when the diseased leaf rate reaches 35%; panicle blast, susceptible varieties are sprayed 3-5 days before breaking, and control again a week later. Rice false smut: the first application 8-10 days before the break, control again during the break period; sheath blight: the disease cluster rate is 20%. Click to get massive rice planting technology click to get massive grain planting technology