JiYuJing (Rice)

Ji Yujing is a new early japonica conventional rice variety bred by Hui73 / Qiuguang in Rice Research Institute of Jilin Academy of Agricultural Sciences. Rice Research Institute, Jilin Academy of Agricultural Sciences

The variety has the following characteristics:

1. It has good biological characters, the growth period is 135days, the effective accumulated temperature is about 2750 ℃, and it is insensitive to light and temperature. The plant height is 95cm 100 cm, the plant shape is compact, the leaf is erect, and the leaf sheath, leaf margin and leaf pillow are all green. The tillering ability is strong, and there are more than 20 tillers in single transplanting seedlings. The ear is large, the average number of grains per panicle is about 100, the grain density is moderate, and the seed setting rate is more than 90%. The grain shape is oval, the glume and glume tip are yellow, awnless, and the weight of 1000 grains is 25g.

two。 The high and stable yield participated in the regional trial of Jilin Province from 1993 to 1995, and the average yield per mu was 530.2 kg, which was 6.2% higher than that of the control rattan line 138. from 1994 to 1995, the average yield per mu was 467.9 kg, 7.5% higher than that of the control rattan line 138.

3. Strong resistance, especially resistance to rice blast, has been identified by the Institute of Plant Protection of Jilin Academy of Agricultural Sciences for many years. It is resistant to seedling, leaf and ear blast, strong and stable, and resistant to salt and alkali. After transplanting, the seedlings turn green quickly, grow early and grow quickly, the stem is strong and tough and resistant to lodging, the filling speed is fast after heading, the green stalk and green leaves do not senescence prematurely, and the living culm is mature.

4. The good quality of rice was determined by the milking chamber of China Rice Institute. The results showed that brown rice rate was 83.74%, milled rice rate was 75.74%, head rice rate was 69.84%, transparency grade 1, grain length 4.72 mm, ratio of length to width 1.64, chalkiness rate 7.0%, chalkiness 12.5%, gelatinization temperature 7, gel consistency 60.0 mm, amylose content 18.77%, protein content 9.93%, among which 7 indexes reached the first class standard of high quality rice. The two indicators reach the secondary standard of high-quality rice.

5. The wide adaptability of Jiyujing is suitable for cultivation in the northeast rice growing areas such as Jilin Province, northern Liaoning, southern Heilongjiang and Zhe League in Inner Mongolia. In 1996, the extension area of Jilin Province reached 1.617 million mu, ranking first among the planting varieties in the province, accounting for more than 40% of the suitable planting areas. at present, it has become one of the main varieties in production, with a cumulative extension area of 4.27 million mu, creating economic benefits of 420 million yuan. It is estimated that the extension area can reach 5 million mu.

Regional and technical cultivation regulations:

Yield target: 570,600 kilograms per mu. The yield components are 16 to 20 holes per square meter, the number of effective panicles is 400 to 500 ears, the number of filled grains per panicle is 85 to 90, and the weight of 1000 grains is 25 grams. The main growth periods are as follows: sowing date April 10 ~ 15, transplanting period May 15 ~ 20, heading date July 25 ~ 30, maturity September 20 ~ 25.

1. The seeds of sparse sowing strong seedlings were strictly disinfected with seed soaking agent before sowing to prevent the occurrence of evil seedling disease. The seedlings were raised by drought, and the sowing rate was 150g to 200g per square meter. Timely ventilation and exercise after emergence to prevent the occurrence of blight.

two。 Timely transplanting seedlings on the basis of cultivating strong seedlings, transplanting seedlings in the middle of May, the distance between rows and holes is 30 cm × 17 cm 20 cm, and there are 3 seedlings per hole to ensure the quality of transplanting seedlings.

3. Rational fertilization advocates the application of farm manure, 1000-1300 kg per mu, 7.5-10 kg of pure nitrogen, 5-7 kg of phosphorus pentoxide and 6-7 kg of potassium oxide per mu.

4. Scientific irrigation requires transplanting seedlings in shallow water, slow seedlings in an inch of water, tillering in shallow water, proper drying at the end of effective tillering, protecting the tyre in deep water, intermittent irrigation after flowering, and not cutting off water too early at the end of growth to prevent premature senility.

5. Integrated control of diseases, insect pests and weeds: 5-7 days before heading, rice false smut was controlled with roamine or DT fungicide, rice blast was controlled with Fuji No. 1 EC, and neck blast should be controlled twice (once before and after heading). Pest control: during the peak spawning period of adult leafminer in the first and middle of June, 0.5 kg / mu of 5% methamidophos was applied to 20 kg of fine sand, and insecticidal control was applied when Chilo suppressalis was eaten into rice straw on July 10-20. Weed control: butachlor and Cao Kexing were used to control stele grass 5-7 days after planting, and the water layer was kept for 5-7 days after application.