How to improve the fruit set rate of rice?

Rice fruit setting rate is one of the important indicators to measure rice yield and quality, which directly affects the final yield of rice. So, how can we improve the rice fruit set rate during the rice planting process? Let’s learn more about it below.

1. Variety selection

There are significant differences in the fruit set rates of different rice varieties, and selecting varieties with high fruit set rates is the first step to improve fruit set rates. When choosing varieties, local climatic conditions, soil types, and the occurrence of pests and diseases should be considered, and suitable varieties with high fruit set rates should be selected.

2. Environmental Control

Under high or low temperature conditions, take corresponding environmental control measures, such as deep irrigation during the day and cooling at night, to reduce the impact of adverse climate on the rice setting rate.

3. Irrigation management

Rice is sensitive to water during the fruiting period and requires sufficient but not excessive water. However, deep irrigation will hinder root respiration, affect the fruit setting rate and may cause fertility deficiency, increase empty grains and reduce yield. It is recommended to adopt a shallow irrigation strategy, that is, to maintain a shallow water layer, which can ensure water supply without affecting the health of the root system.

4. Apply granular fertilizer skillfully

To increase the fruit setting rate of rice, you can use some granular fertilizer appropriately. Granular fertilizer can improve the photosynthesis capacity of leaves and the vitality of root system, thereby increasing the filling material after ear emergence, reducing the number of barren grains and increasing the grain weight.

5. Spray foliar fertilizer

In the later stage of rice root system, the vitality decreases and the ability to absorb nutrients weakens. In order to make up for the lack of nutrient absorption by the roots in time, spraying high-quality potassium dihydrogen phosphate and other foliar fertilizers can increase the fruit set rate.

6. Pest and disease control

By effectively controlling diseases and pests during the heading and fruiting period of rice, the rice can be filled and fruited normally, and the number of empty grains will be greatly reduced, thereby improving the fruit setting rate, increasing the thousand-grain weight, and increasing production and income. After heading, pay attention to the prevention and control of diseases and pests such as sheath blight, rice blast, ear neck blast, rice leaf folder, striped stem borer, and rice planthopper.

In general, improving the rice fruit set rate is a complex process that requires comprehensive measures from multiple aspects such as variety selection, water and fertilizer management, pest and disease control, and environmental regulation, so as to effectively increase rice yield.