Under normal circumstances, the average rice empty grain rate is 10% to 20%, and severely up to 40%, which has a great impact on rice yield.
First, the cause
The rate of rice empty grain is mainly affected by three factors.
1. Climate factors. During the growth and development of rice, especially during the heading and flowering period, the environmental conditions are not suitable. If the temperature exceeds 35%, or is lower than 20 °C, the rainy days are too much or too dry, it will affect the development of rice ear and pollination and insemination, resulting in difficulty in pollination, thus increasing the rate of rice empty grain.
2. Cultivation factors. Fertilization is unreasonable, the cultivation density is too large, the paddy field drainage is not lost or long-term deep irrigation, the medium-term drying time is too long, too heavy, and the water loss is too early and the plants are prematurely aging, which will affect pollination and insemination. The air granule rate is greatly increased.
3. Pest factors. Rice is affected by pests and diseases, and the prevention and treatment is not timely, which will increase the rate of empty mites.
Second, prevention and treatment methods. In addition to strengthening cultivation management, the following mixture can greatly reduce the air granule rate of rice: Shengnong 10g + gibberellin 0.5g + boron fertilizer 100g + water 15kg, in rice rupture and ear Spray once each time. In areas with rice blast, rice smut, and sheath blight, adding 25 g of copper sulphate + 50 g of salt + 100 g of vinegar to the above mixture can not only quickly eliminate the disease, but also increase insemination and reduce empty granules. . If there are pests, add 10 grams of poisoned ear.
Shengnongsu can significantly reduce empty mites, the main functions are: 1 can make rice heading neat, improve the vitality of female flowers and male flowers, promote pollen tube elongation, prevent pollen abortion, enhance pollination and fertilization ability; 2 enhance photosynthesis, make plants Robust, prevent physiological premature aging, enhance the resistance to adverse effects such as continuous rainy, dry hot air, insufficient light, etc., especially enhance the ability of pollination and fertilization at low temperature; 3 enhance the efficacy and fertilizer efficiency, improve the disease prevention and insecticidal effect of pesticides So that the affected rice will resume healthy growth as soon as possible.
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