Rice Heading Difficulty: Full Analysis of Causes and Solutions

We are all familiar with rice; it is the staple food for one third of the world's population, and its yield is tied to our survival. However, during cultivation, difficulty in heading can occur, severely affecting rice yield. So what causes difficulty in heading in rice? How can it be solved? Let's take a look at the detailed introduction below.

I. Causes of Heading Difficulty

1. Variety: Heading difficulty generally appears as the neck-not-emerging phenomenon, where rice grains cannot emerge in time to pollinate and fertilize, easily forming empty and blighted grains, with a major impact on yield. This cause may be a problem with the variety itself; varieties that are inherently prone to empty and blighted grains have a major impact on yield, and the problem becomes even more severe when they encounter unfavorable growing conditions.

2. Improper pesticide application: Improper pesticide application mainly refers to excessive application of agents such as triadimefon before heading, which very easily causes the neck-not-emerging phenomenon in rice. In addition, improper application of herbicides can also affect the growth of rice, and in severe cases can also cause difficulty in heading.

3. Poor temperature: Rice is relatively sensitive to temperature at the heading stage. If the temperature is too high or too low, it can also cause the neck-not-emerging phenomenon in rice, resulting in difficulty in heading.

4. Nutrient deficiency: Long periods of rainy weather can cause serious loss of soil nutrients, or the soil fertility itself may be insufficient, so that rice cannot grow normally due to lack of nutrients, thus resulting in difficulty in heading.

5. Pests and diseases: Under poor growing conditions, especially during rainy weather, pests and diseases are more severe, causing reduced yield in mild cases and direct total crop failure in severe cases. The pests and diseases that affect rice heading difficulty include rice blast, stem borers, rice planthoppers, and rice leaf roller, etc.

II. Solutions

For rice with heading difficulty, it is recommended to first spray gibberellin. After spraying gibberellin, the rice will head in time within 2-3 days, allowing pollination to occur, which can promptly reduce the empty and blighted grain rate and avoid a severe drop in yield. Generally, use 1-2 grams of gibberellin per mu, diluted with 50-60 kg of water, and spray. If only part of the rice shows heading difficulty, when spraying the agent, only spray those plants; do not spray normal heading plants, so as to avoid causing excessive internode elongation in these plants later. In addition, during the heading stage, low-concentration sodium humate, potassium chloride, and urea solutions can be sprayed, which can enhance photosynthesis, increase the seed-setting rate, and raise yield.

The above is an introduction to the causes of and solutions for heading difficulty in rice. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.