The main diseases and insect pests that harm rice leaves include rice leaf roller, rice blast, and rice bacterial stripe. In the past two years, we encountered some farmers who lacked understanding of bacterial stripe. If the onset of the disease is not controlled in time, medicine is used in the later stage of rice, which means starting from the heading and flowering stage of rice. At this time, we must protect the three leaves of the sword, which refers to the sword leaf, the second leaf and the third leaf. Slowly turn yellow during the rice filling period
The sword leaves also have the greatest impact on rice yield. Therefore, in actual production, we must do a good job in field management in the middle and late stages of rice, focusing on root nourishment and maintenance. Leaves, enhance the light energy efficiency of the population, and minimize the negative impact of flag leaves on rice yield
The quality of flag leaves is the prerequisite for high yield and bumper harvest of rice. High-quality sword leaves reflect high-yielding rice, which is an effective channel for transporting essential nutrients to form rice. We know that crops grow by photosynthesis, and leaves are an important part of photosynthesis. Rice leaves are important organs for photosynthesis during the growth of rice
When breaking open the heart of the main stem of rice Leaves, there are no young leaves inside the heart leaves, instead there are young ears wrapped inside. The young ears at this time are more than 1.5cm long. This heart leaf is the top leaf of rice, also called the sword leaf. Protecting the flag leaves of rice is a key link in late-stage rice management. First, we must carefully prevent and control diseases and insect pests to prevent various rice pathogens from infecting the flag leaves. Actively prevent and control pests, and do not let pests such as the leaf curlers of the late rice eat the sword leaves
When the sword leaves of the rice are in the later stage, it is no longer enough to simply provide nutrients from the root system of the rice to satisfy all the rice. During this period, the root system of rice can only provide less than 60% of nutrients. Increase rice foliar fertilizer
In order to prevent premature senescence in the later stages of rice growth, it is advisable to apply topdressing grain fertilizer appropriately based on rice growth and leaf color, or spray urea, potassium dihydrogen phosphate, and water-soluble macronutrients during the heading to grain filling stages. Fertilizer, etc., supplement nutrients and promote rice filling and firmness