A New glutinous Rice Variety-- Zhe Nong Da 454

Zhejiang Agricultural University 454 is a new mid-ripening and late waxy variety selected by the Department of Agronomy of Zhejiang University from the double cross combination C 889 / Zhong 8029ip / Tai 202. After 4 years and 7 generations of ward identification and selection, the disease was finalized. The trial planting was expanded to more than tens of thousands of mu in 1998 and was approved by the Variety approval Committee of Zhejiang Province in March 1999.

Characteristic characteristic

The plant of Zhejiang Agricultural University is about 80cm in height, medium tillering ability, thin and tough stem, more grains per panicle, high seed setting rate, large and full grain, yellow mature green stalk, oval grain, yellow hull and ear tip, and easy to thresh. The rice grain whitens faster after harvest. Zhejiang Agricultural University 454 is welcomed by seed companies and farmers everywhere for the following reasons:

The main results are as follows: 1. the panicle type is larger, the 1000-grain weight is high, the filled grains per panicle is about 70, and the 1000-grain weight is 30g.

2. Strong disease resistance and good yield stability. No rice blast and bacterial blight were found in the field of Zhejiang Agricultural University 454 from 1995 to 1998. Identified by the Institute of Plant Protection of Zhejiang, Hunan and Guangdong Academy of Agricultural Sciences, the blast resistance of this variety was 3 Mel 7, which was better than that of Xiushui 11 and 2 Mel 5.

3. Moderate ripening period and wide adaptability. This variety is suitable for single cropping and continuous cropping late rice. The results of AMMI model analysis in the national southern regional test show that this variety is especially suitable for Zhejiang, Hubei, Shanghai and other provinces and cities.

4. Excellent commodity quality and good waxy property. This variety is easy to thresh, the rice becomes white when turned in the sun, the rice grain is large and white, the waxy property is good, the commodity is good, and the rice cake tastes good. Examined by the Rice and Product quality Monitoring Center of the Ministry of Agriculture in 1996, Zhejiang Agricultural University 454 milled rice rate, grain shape, alkali elimination value and gel consistency reached the first class standard of high quality rice, while brown rice rate, head rice rate and amylose content reached the second grade standard of high quality rice.

Yield performance

In 1996 and 1997, we participated in the regional trial of double-cropping late rice in Zhejiang Province. The average yield per mu was 4573kg and 427.3kg, respectively, which was 4.62% and 9.65% higher than that of Xiushui 11, and the average yield per mu in two years was 442.3kg, 6.99% higher than that of Xiushui 11. Among them, the yield ranked first in 1997, and the increase reached a very significant level. In 1998, he participated in the regional trial of double-cropping late japonica rice group in southern China with an average yield of 480.44kg per mu, which increased by 9.6% over the control variety Xiushui 11, ranking second in yield and reaching a very significant level. In the same year, in the production experiment of double-cropping late rice in Zhejiang Province, the average yield of 446.6kg per mu was 4.22% higher than that of the control. The whole growth period was 1.7 days shorter than that of the control. In 1999, we will continue to participate in the regional test of double-cropping late japonica group in the southern rice region of China, and carry out production experiments at the same time. The production demonstration in Changxing, Fuyang and Shengzhou of Zhejiang Province from 1997 to 1998 showed high and stable yield. For example, the improved seed farm in Changxing County propagates 33 mu, and the yield per mu reaches 508kg. The demonstration plot of double cropping late rice in Shengzhou seed farm is 50.73 mu, and the average yield per mu is as high as 475.9kg. Zhejiang Agricultural University 454 is expected to become one of the main cultivated varieties of glutinous rice in Zhejiang Province in recent years.

The key point of cultivation is that this variety belongs to large grain type. The key to obtain high yield is to increase panicle type, increase seed setting rate and strive for more grains (about 70 grains) on the basis of ensuring a certain number of panicles (250000-280000). Generally, it can be sowed at the same time with local late japonica and waxy varieties, single cropping rice is sown at the end of May and early June, and double cropping rice is sowed from June 20 to 25 with a seedling age of 30 Mel 35 days. Before sowing, the seeds were soaked in 2000-fold solution of "402" antimicrobial agent for 2 days and 2 nights, and washed with clean water to be sown in order to control the disease of evil seedlings. Generally, 2500-3000kg organic fertilizer is applied per mu. Fertilization in the field should be heavy before and light after, promote early development and ensure effective panicles. Stop using fertilizer after August 15 to make the green stalk of rice ripe. This variety also has a high demand for potash fertilizer. During the growth period, attention should be paid to the control of rice thrips, rice leaf rollers, rice lice and aphids. Water slurry management should be shallow irrigation in the early stage, moderate shelving in the middle stage, dry and wet in the later stage. To reduce the incidence of sheath blight.