Effect of hot weather on rice
The hot weather during this time allowed rice to grow into the peak of pests and diseases. While grasping the management of water and fertilizers, rice should also pay attention to strengthening field inspections, grasping the occurrence of diseases in a timely manner, and suppressing the occurrence, development and spread of diseases. Prevention and control should grasp the key links. Rice should protect the flag leaves during the tillering period, and the breakage period should focus on preventing rice blast and aphids, and the panicle stage should be controlled. Priority is given to the selection of physical control technologies and low-toxic, low-residue pollution-free pesticides so that the population of diseases and insects can be controlled below the level of harm. Chemical pests and diseases should pay attention to the following matters: First, timely, symptomatic application of drugs. If the disease is to be selected, it is better to control the pesticide at the early stage of disease, and it is better to choose the pest control and control effect in the larval stage. Second, pay attention to the method of application. The main crops of rice borer, rice planthopper, and sheath blight are harmful to the middle of the rice plant, and the coarse mist is sprayed on the middle and lower part of the rice plant.
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