Introduction to Zhongke Fa No. 5 Rice Variety

Zhongke Fa No. 5 is also a kind of Japonica-type conventional rice, which is selected and bred by the Chinese Academy of Sciences, and the validation number is State Rice 20180077.This rice variety has the characteristics of high yield, high quality and multi-resistance, which is suitable to be planted in Ningxia, Liaoning, Inner Mongolia, Heilongjiang, Jilin and other areas, and it conforms to the national standard for the validation of rice varieties, with a fertility period of 150 days.

Introduction of rice variety validation of Zhongke Fa No. 5

"Zhongke Fa No. 5" passed the validation of the National Variety Validation Committee in June 2018, and was announced on the Bulletin of the Ministry of Agriculture and Rural Affairs (MARD) No. 65 in June 2018. The Institute of Genetic Development is the selective breeding unit of this variety, and researcher Liu Guifu is the first selective breeder of this variety. The validation announcement of this rice variety is as follows:

Validation No.: Nationally Validated Rice 20180077

Variety Name: Zhongke Fa 5

Applicant

Breeder: Institute of Genetics and Developmental Biology, Chinese Academy of Sciences

Variety origin: Air Yuk 131/Southern Long Grain Japonica//Ji Japonica 88

Review comments: the variety meets the national rice variety Validation standards, through the validation.

Introduction of CKF-5 Rice Variety

CKF-5 rice has the advantages of high yield, high quality, multi-resistance, strong tillering, fast grouting speed and wide adaptability.

Variety Characteristics Points

①Maturity

The rice variety in the two-year regional test, full-life span of 150.1 days, than the control Jiyu Japonica maturity 3 days later.

②Strain

Zhongke Fa No. 5's plant type is compact, clean growth, fast color change in the late stage, the sword leaves are straight, the culm green and yellow seeds. Moreover, this rice variety has strong tillering ability, excellent overall characters, large spikes and grains, high yield and quality, long grain size (aspect ratio 3.0), resistant to rice blast disease, and resistant to downfall.

The plant height of CKF 5 rice is 102.8 centimeters and the spike length is 17.8 centimeters. It has 273,000 effective spikes per mu, 118.3 total grains per spike, 81.5 percent fruitfulness and 26.9 grams per thousand grains.

③Resistance

The rice blast composite index of CKF-5 was 2.0 and 2.4 in two years respectively, and the loss rate of spike-neck plague was the highest grade 5, which was moderately resistant to rice blast.

Major indicators of rice quality

Zhongke Fa No. 5 rice grain has a whole refined rice rate of 70.1%, chalky white grain rate of 6.0%, chalkiness of 1.8%, straight-chain amylose content of 16.1%, gelatin consistency of 70 millimeters, aspect ratio of 3.0, and has reached the Ministry of high-quality second-grade rice.

Yield performance

Zhongkefa No. 5 in 2016 and 2017 in the national northern early Japonica late-maturing group of regional trials, two years of regional trials, the average yield of 688.84 kg per mu, than the control Jiyu Japonica yield increase of 9.32%.

In the 2017 production trial, the average mu yield of CKF5 was 653.68 kg, a 14.86% increase over the control Jiyu Japonica.

Applicable region

CKF-5 is selected and bred by the Institute of Genetics and Developmental Biology of the Chinese Academy of Sciences (CAS), and belongs to the Japonica-type conventional rice.

This rice variety is suitable for planting in the upper limit of the first cumulative temperature zone in Heilongjiang Province, in the middle-ripening rice area of Jilin Province, in northeastern Liaoning Province, in the Yinhuang Irrigation Area of Ningxia, and in the Chifeng area of Inner Mongolia, where rice blast is mildly prevalent.

Zhongke Fa No. 5 rice cultivation technology

(1) Zhongke Fa No. 5 rice seed timely and sparse sowing, cultivate strong rice seedlings, using the seed soaking spirit and other agents to soak seeds, eliminating seed infectious pathogens.

(2) The CKF 5 rice seed is transplanted at the right age to promote early development, to bring medicine to the field to prevent good seedling disease and pest .

(3) CKF-5 needs to be planted reasonably densely to increase the number of spikes, and to take advantage of the advantages of more spikes and larger spikes in terms of yield increase.

(4) The total fertilizer requirement is about 35 kilograms of urea, with phosphate and potash fertilizers and appropriate increase in organic fertilizers. Zhongke Fa No. 5 in the fertilization should be heavy before the control, reduce the amount of nitrogen fertilizer in the late stage, improve the rate of fruitfulness and thousand grain weight and achieve high yield and quality.

(5) scientific water slurry management, dry and wet alternation in the middle and late stages, healthy roots, strong tiller, do not cut off water too early in the maturity period.