Liaojing 135 (Rice)

Liaojian 135, a new rice variety, was bred by Rice Institute of Liaoning Academy of Agricultural Sciences in 1989 with 84-233 as female parent and 79-178 as male parent.

The characteristic seedling is sturdy, the leaf color is thick green, the seedling is slow and fast after transplanting, the growth is robust, and the tillering ability is strong. The plant type is compact, the leaf is erect, the opening angle of the flag leaf is good, the stem is tough, and the living stem does not mature prematurely in the later stage. Plant height 95~100cm, panicle length 15~18cm, grain density, 110-120 grains per panicle, 1000-grain weight 24.1g, spike shape semi-loose, glume yellow-white, with sparse short awn. Liaojing 135 is generally sown at the beginning of April in Shenyang, transplanting rice seedlings in the early and middle of May, heading in early August, maturing at the end of September, and the growth period is 155-156 days. According to the identification of relevant units in the province and China, the resistance to rice blast is MR, sheath blight is very light, rice false smut is light, fertilizer resistance and lodging resistance are strong. According to the laboratory analysis of China Rice Institute, the brown rice rate of Liaojing 135 is 82.8%, the milled rice rate is 74.8%, the head rice rate is 72.0%, the grain length 5.1mm, the grain length-width ratio is 1.8, the chalkiness rate is 40%, the chalkiness is 5.4%, the transparency grade 1, the alkali elimination value is 7.0, the gel consistency 76mm, the amylose content is 17.6%, the protein content is 7.4%, the taste is good, and the rice quality is good.

Yield performance: in the quality comparison test in 1994, the average yield per mu was 512.6kg, which was 26.7% higher than that of the control Qiuguang. In the quality comparison test in 1995, the average yield per mu was 491.6kg, which was 13.1% higher than that of Qiuguang. The average yield per mu in two years was 502.1kg, 19.6% higher than that of the control Qiuguang 419.7kg per mu. In 1996, participated in the provincial mid-maturity group regional test, the average yield of 582.Okg per mu, compared with the control Qiuguang average yield of 534.6kg per mu, increased by 8.9%. In the provincial mid-maturity group regional test in 1997, the average yield per mu was 511.lkg, which was 14.3% higher than that of the control Tiejing 4. In the two-year regional test, the average yield per mu was 546.6kg, which was 11.3% higher than that of the control, and ranked first in the regional test. In 1997, five production appraisal test sites showed an average yield of 607.4kg per mu, which was 12.6% higher than that of Qiuguang, the control. In 1998, the average yield per mu of 6 production appraisal test sites was 618.8kg, which was 9.3% higher than that of Tiejing 4, which was higher than that of Tiejing 4. A total of 11 experimental sites in two years, compared with the control, all increased production, the average yield per mu 613.6kg, compared with the control average yield per mu 553.9kg, increased by 10.8%. In the process of demonstration and trial in large area, the average yield per mu was 600~650kg, and the highest yield per mu was 784.7kg.

Rice cultivation Institute of Liaoning Academy of Agricultural Sciences

Region and technology 1. Cultivate strong seedlings: dry the seeds for 2-3 days before sowing and strictly disinfect the seeds to prevent the occurrence of evil seedling disease. Generally sowing at the beginning of April, the sowing rate is 150 to 200g per square meter. After emergence, the seedlings should be ventilated in time to prevent the occurrence of blight. two。 Reasonable sparse planting: the distance between rows and plants is generally 3Ocm × (13.2-16.5) cm, planting 4-5 seedlings per hole, striving to keep 300000 effective ears per mu, and transplanting seedlings in the first and middle of May. 3. Scientific fertilization: general mu application of standard nitrogen 60~7Okg, heavy application of agricultural fertilizer, adequate base fertilizer, general base fertilizer application of ammonium sulfate 2Okg, diammonium 1Okg (or superphosphate 5Okg), potassium fertilizer 7~8kg, zinc fertilizer lkg. After slow seedling, ammonium sulfate 2Okg was applied per mu at the beginning of tillering, and sulfur 15~2Okp was applied per mu at the peak tillering stage from June 20 to 25, and ammonium sulfate 5~7kg was applied at the meiotic stage from July 10 to 20. Fertilization follows the principle of heavy before and light after, more application should be applied to promote tillering in the early stage, and less application should be applied in the later stage according to growth, soil fertility and climatic conditions, so as to prevent the occurrence of rice false smut and panicle neck blast. 4. Water layer management: it is necessary to transplant rice seedlings in shallow water, slow seedlings in an inch of water, tiller in shallow water, and sun the field properly at the end of effective tillering. Rice should not be cut off too early in the growth period to prevent premature senescence. 5. Control of diseases and insect pests: generally from mid-June to early July, rice Fengling is used to control Chilo suppressalis. According to the climatic conditions at that time and the specific conditions of field investigation, the control effect is better before the 3rd instar of the larvae. Spray ammonium ketone (350 g per mu) or other copper preparations 5-7 days before heading. Second, control false smut of rice.

According to the results of regional test, production identification and key demonstration test of rice varieties in Liaoning Province, it can be planted in Shenyang, Liaoyang, Anshan, Haicheng, Yingkou, Panjin, Tieling, Kaiyuan and Jinzhou. Outside the province, it can be planted in *, Beijing, Tianjin, Hebei, Shandong and other places.