In recent years, Zhongkefa No. 5 is a relatively popular rice variety in Northeast China, mainly because of the considerable yield and good rice, in November 2023, Zhongkefa No. 5 rice **285-3.4 yuan catty. Zhongkefa No. 5 is a landmark variety of modern molecular design breeding technology achievements, with excellent traits such as high yield, high quality, resistance to rice blast, and lodging resistance, and was approved by the state in 2018.
The whole growth period of Zhongkefa No. 5 is about 150 days, and the actual growth period is 2-3 days earlier than that of Daohuaxiang No. 2 (Wuyoudao No. 4), and the accumulated temperature is 2700-2750, which is suitable for planting in the upper limit of the first accumulated temperate zone in Heilongjiang region, and is suitable for planting in Daohuaxiang No. 2, Songjing 22, Longyang 16 and other varieties.
Zhongkefa No. 5 is a national variety, Heilongjiang Province, Jilin Province, Liaoning Province, Ningxia Autonomous Region, Inner Mongolia Autonomous Region 5 provinces have been reviewed, can be planted in Heilongjiang Province's first accumulated temperate zone, Jilin Province's medium-ripening rice area, northeast Liaoning Province, Ningxia Yellow River irrigation area and Inner Mongolia Chifeng area, and quickly became the main cultivar in Heilongjiang Province, Jilin Province, Inner Mongolia Autonomous Region.
Compared with Daohuaxiang No. 2, Zhongkefa No. 5 is better than Daohuaxiang No. 2 in terms of yield, resistance and rice yield, and the rice quality and palatability are excellent, but the market recognition is not as high as that of Daohuaxiang No. 2, which is a high-end long-grain fragrant japonica variety.
The maximum yield per mu of Zhongkefa No. 5 can reach more than 1,500 catties, which can increase the yield by more than 100 kg per mu compared with Daohuaxiang No. 2. In 2023, in Shuitian Village, Haolibao Town, Zhalaite Banner, Xing'an League, Inner Mongolia Autonomous Region, Zhongkefa No. 5 will be planted with the highest yield of 761 per mu5 kg (converted to 14.)5% standard moisture), setting a record for the highest yield of rice per mu in Inner Mongolia. From 2016 to 2017, the average yield per mu was 68884 kg, which is significantly higher than that of the control variety.
Zhongkefa No. 5 is resistant to rice blast, lodging and cold, and the comprehensive index of rice blast is two years respectively. 4. The highest level of loss rate of ear neck blast is level 5, which can reduce disaster losses by 30%.
The quality of No. 5 rice has reached the second level of the ministerial standard, and the length and width ratio is 30. The rate of whole rice milling is more than 8% higher than that of rice flowers, reaching more than 70%, the rice grains are white and clear, the belly is white, and the rice tastes good.
1. Scientific irrigation. Adopt the irrigation method of combining shallow irrigation and intermittent irrigation, strengthen the roots, strengthen the tiller, and cut off the water in time in the later stage to promote early maturity.
2. Reasonable fertilization. Fertilization should be heavy before and after control, controlled application of nitrogen fertilizer, increase the application of silicon and potassium fertilizer, and later foliar spraying of potassium dihydrogen phosphate and brassinolide to prevent late maturation, accelerate grain filling, improve seed setting rate and 1000-grain weight to achieve high yield and high quality.
3. Pest control. The main pests and diseases are rice blast, sheath blight, leaf miner fly, rice planthopper and two borer, etc., which should be controlled by rational use of drugs in the early stage of occurrence.