What are the key points of rice late-stage management techniques?
How should rice be managed in the late stage? Please provide an introduction to the management methods. Rice late-stage management can refer to the following methods: 1. Disaster prevention and resistance. The late growth stage of rice is a season with frequent typhoons, rainstorms, abnormally low temperatures, and extreme high temperatures. We must firmly establish the awareness of fighting disasters to secure a bumper harvest, always pay attention to weather information, and for rice fields with incomplete supporting facilities...
How should rice be managed in the late stage? Please provide an introduction to the management methods.
Rice late-stage management can refer to the following methods:
I. Disaster prevention and resistance
The late growth stage of rice is a season with frequent typhoons, rainstorms, abnormally low temperatures, and extreme high temperatures. We must firmly establish the awareness of fighting disasters to secure a bumper harvest, always pay attention to weather information, and for rice field plots with incomplete supporting facilities, clean out the inner and outer three ditches to ensure both irrigation and drainage capacity, and improve disaster resistance.
II. Mixed spraying of fertilizer and pesticide
The period from heading to maturity of rice is an important period for yield formation, and more than 80% of the grain yield comes from photosynthetic products after heading. Years of practical experience show that using mixed spraying of fertilizer and pesticide can, first, delay the senescence of functional leaves; second, increase chlorophyll content and improve leaf photosynthetic efficiency; and third, accelerate the transport of photosynthetic products to the grains and promote grain filling and plumpness.
III. Pest and disease control
In the late stage of rice, the main targets for control should be rice neck blast, rice false smut, sheath blight, and rice leaf roller, while also controlling rice planthoppers and stem borers. At present, it is necessary to seize sunny weather for pesticide application. If rain occurs within 4 hours after spraying, re-spraying is needed. Correct pesticide types, accurate dosage, and sufficient water volume should be used to improve control efficacy.
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