Rice Cultivation Techniques During the Hot Summer-Autumn Season

Summer-autumn rice production faces many difficulties due to unfavorable weather conditions. To achieve high yields, proper rice cultivation techniques play a crucial role. Let’s explore with Viet Nga Fertilizer the appropriate summer-autumn rice cultivation techniques under the current prolonged and intense heat!

1. Suitable pH level for summer-autumn rice cultivation.

Soil pH is a scale that reflects the acidic or alkaline nature of soil, assessed by the concentration of H+ ions in the soil.

pH plays a crucial role in rice cultivation; soil pH that is too low or too high will affect the growth and development of rice plants, impacting the final yield of the crop.

Rice pH scale:

– pH < 4: The soil is very acidic, heavily saline, rice cannot grow, and it is very difficult to raise the pH level.

– 4 < pH < 5.5: The pH needs to be raised, but the rice can still grow if the pH is raised.

– 5.5 < pH < 6.5: Good soil, rice can grow healthily.

The ideal pH range for rice cultivation is between 6 and 6.5.

Common methods for raising soil pH include:

– Liming: Lime prevents soil degradation, increases soil pH, creates favorable conditions for microorganisms to thrive, and enhances the plant’s ability to absorb nutrients.

– Phosphorus fertilization: Helps provide sufficient readily available phosphorus for rice plants, effectively neutralizing and reducing soil acidity.

– Using Humic Acid: Helps balance pH levels, improves water osmosis to the soil surface, retains water and protects plants, maintains soil moisture and reduces drought.

2. Field sanitation

After harvesting the winter-spring rice crop, the soil still retains disease germs and chemicals from the previous season. To ensure good growth of the summer-autumn rice crop, thorough soil cleaning and preparation are necessary.

The steps involved include:

– Cut the straw into short pieces and spread it evenly, let the field dry in the sun for about one day, and then process the straw. Proper straw processing helps to improve rice cultivation in the summer-autumn season and save costs.

Refer to the guide on how to properly and cost-effectively dispose of rice straw.

– Plow the land using proper techniques to loosen the soil and let it dry for 7 to 10 days (the longer the soil is left to dry, the better).

– When it’s time for planting, flood the rice fields with water, level the surface, and create drainage mounds to prepare for sowing the rice.

3. Proper water management

Proper water management in rice paddies helps rice plants grow and develop well, minimizing the impact of acidity and organic toxicity. It also reduces nutrient loss and limits the development of pests and diseases.

The different stages of rice growth require appropriate amounts of water to ensure the plant can thrive.

Farmers need to pay attention to the amount of water needed during each stage of rice cultivation:

– Seedling stage: Rice plants need water to germinate and grow.

– Tillering stage: Rice needs plenty of water for vigorous tillering.

– During the heading and flowering stage of rice: Rice needs water to develop its panicles, flower, and nourish its grains.

– During the rice ripening stage: Water the field to keep it consistently moist and reduce empty grains.

– Pre-harvest stage: Drain the water to allow the rice to ripen evenly and the grains to become firm.

Refer to the article “Effective water management helps rice plants stay healthy.”

4. Diseases and pests

The summer-autumn crop season is affected by erratic weather and faces pressure from pests, diseases, and weeds.

Common diseases and pests during the summer-autumn crop season:

– Diseases: leaf blast, neck blast, leaf blight, premature yellowing of leaves, grain discoloration, etc.

– Pests: leaf-rolling caterpillars, stem borers, onion thrips, brown planthoppers, etc.

To manage diseases and pests and minimize damage to summer-autumn rice crops, it is necessary to adhere to and implement technical solutions for disease control.

The best way to prevent diseases is for farmers to regularly visit and inspect their fields to proactively detect pests and diseases and take immediate action, the earlier the better.

5. Nutrition

Fertilizers are the primary source of nutrients for rice plants, enabling them to grow and develop well. Rice plants require different types of nutrients and varying amounts throughout their growth stages.

Let Viet Nga Fertilizer suggest some quality fertilizers to ease your worries about cultivation and save costs this summer-autumn season!

5.1. Applying single fertilizers to summer-autumn rice crops:

With harsh weather conditions and prolonged heat, the effectiveness of fertilizer use is affected. Applying nitrogen fertilizer to rice can lead to significant nitrogen evaporation and loss; therefore, high doses of nitrogen fertilizer or products that reduce nitrogen loss are needed.

Urea 46N+ Viet Nga reduces nitrogen loss, increases fertilizer efficiency, helps plants grow and develop healthily, thereby increasing yield, quality, and economic efficiency.

DAP 18-46 effectively supplies nitrogen and phosphorus, promoting leaf and stem development, and strengthening the root system for healthy rice plant growth.

Viet Nga Potassium Chloride 61 provides potassium, helping plants strengthen their resistance to diseases and pests, and promoting healthy growth and development.

Refer to the guide on applying single fertilizers to rice crops during the summer-autumn season.

5.2. Apply specialized fertilizer for summer-autumn rice crops.

NPK 22-15-8 +TE (tillering – bushy growth) is specifically used for rice as the first and second fertilizer applications. It helps increase root growth, tillering, the number of effective tillers, stimulates bushy growth, increases resistance to pests, diseases, and saline soils, thereby increasing rice yield and quality.

NPK 19-7-25 + TE (for tillering and grain filling) provides micronutrients in the soil, helping plants stay healthy, resist lodging, and fight pests and diseases. As a result, rice plants grow and develop vigorously, producing large, evenly distributed panicles with big, firm grains, and increased yield.

Refer to the article on applying specialized fertilizers for summer-autumn rice crops.

In conclusion:

Achieving the highest yields in the summer-autumn rice crop requires thorough preparation and the implementation of proper cultivation techniques. This ensures high crop yields and helps farmers maximize their profits.

Hopefully, this article has provided farmers with some useful knowledge for cultivating rice during the summer-autumn season. For any questions or concerns regarding rice cultivation, please contact our hotline 02778 55 66 77 for detailed advice!

Wishing everyone a bountiful harvest!