First, the main push variety
According to the results of the experiments and demonstrations of agricultural scientific research and extension units at all levels in 2015, the Provincial Agricultural Committee has selected 18 experts for the best rice varieties in different regions of our province in 2016, including: Changbai 25 and Baijing No.1. , Dongdao 4, Ji Nongda 505, Dongpu 3, Jiudao 63, Jiyu 88, Tonghe 858, Ji Nongda 858, Jiyu 511, Tongke 18, Hongke 67, Jiyu 509, Tongyu 255, Nine Rice No. 63, Tongyu No. 245, Jiyu 809, and Jinongda 809.
It is recommended that the rice varieties should be promoted mainly according to the above varieties. The selected varieties should be suitable for local ecological conditions, ensure safe and mature all year round, and the average safety and maturity guarantee rate is over 95% to prevent cross-regional planting. At the same time, focus on the selection and application of high-quality disease-resistant varieties.
Second, technical requirements
First, we must adhere to the idea of ​​early shacking. In the winter of 15 years, the temperature was high and the precipitation was low. However, in February this year, the temperature was low and the warming was slow. There was a possibility that the cold weather would cause adverse weather for rice seedlings. Therefore, all levels of agricultural technology promotion departments should promote early sheds before seedlings (preferably in the middle of March), on the one hand, can effectively improve the ground temperature, on the other hand, it is also conducive to the cultivation of sorghum and reduce buckwheat and other rice seedlings. The occurrence of disease.
Second, we must promote seeding after germination. The time of germination and non-germination should be different for more than 5 days. It is recommended to carry out germination before seedlings. At the same time, according to the local climatic conditions, the average temperature in 5 consecutive days is higher than 5 °C, so that it can be higher than 10 °C. Effective temperature.
Third, pay attention to reduce the amount of seeding. The biggest problem in production is that the amount of seeding is too large, and reducing the amount of seeding is the most important. The optimal seeding rate per bowl of seedlings is 3, not more than 5. The seedlings of the transplanting trays should not exceed 50 kg of germination seeds per hectare, that is, no more than 120 g of germination seeds per dish, and the seedlings should not exceed 70 g of germination seeds. The isolation layer should not exceed 350 grams of germination seeds per square meter, and the dry seedlings should not exceed 200 grams of germination seeds per square meter.
Fourth, we must strengthen management and foster strong growth. All localities should vigorously promote the breeding of large and medium-sized greenhouses, adhere to the high standard of dry seedlings, seedlings and mechanized transplanting seedlings, implement saltwater selection, strengthen seedling management, pay attention to timely ventilation and refine seedlings, and properly control temperature and humidity (seeding - The seedling temperature is controlled at about 32 °C, and it should be ventilated when it exceeds 35 °C. The temperature of the seedling-1.5 leaf shed is controlled at 28-25 °C. When the temperature exceeds 28 °C, it should be ventilated in time. When the temperature of the shed falls to about 25 °C, the membrane is closed. 1.5-2.5 leaf shed temperature control at 25 ~ 20 ° C, the highest should not exceed 25 ° C; 2.5 leaves - transplanting should not be higher than 20 ° C, 4 days before transplanting to completely ventilate the seedlings. Watering must avoid flooding, the morning sun Before, there is a large water drop on the tip of the rice leaf and it will not be watered). At the same time, cooperate with chemical control measures to prevent the occurrence of pests and diseases. The first is to prevent and cure rice blight, and to do the disinfection and acid treatment of bed soil and nutrient soil. Once the disease occurs, it is necessary to carry out chemical control in the early stage of the disease. The second is to control rice seedling disease. In the soaking of rice, it is necessary to do a good job of disinfection treatment. It is recommended to use a drug with a stable effect. Third, pay attention to the occurrence of phytotoxicity when the seedbed chemical weeding, we must choose a safe herbicide. The fourth is to take the medicine with fertilizer to the ground, apply the diammonium 30g/m2 one day before transplanting, and water after topdressing; use 40% omethoate emulsifiable concentrate 10g/water 800 times spray per 100m2 seedbed (mainly to prevent the leaf fly).
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