Minghui 63 (Rice)

[basic situation] Minghui 63 was a female parent crossed with Nannong 3005. From F2 generation, excellent single plant was selected, high quality grains were selected, southern multiplication was added year after year, Yangzhou main season screening, inoculation identification resistance, F5 generation and Xieqingzao A were paired, and resilience and heterosis were identified in the main season of 1994. among the selected lines, No. 41 showed the most outstanding performance, good leaf shape, coordinated spike grain structure and more spikes in test cross F1. The fertility is good, the grain is full, the seed setting rate is high, and the rice quality is better. Then the strain was further purified and propagated. The small area seed production of the test cross combination was carried out in Hainan in the spring of 1995, and the variety comparison identification test was carried out in the main season. The yield of the restorer line reached 9.09t/hm2, which was 14.1% higher than that of Minghui 63, and the yield of the test cross combination was 10.29t/hm2, which was 11.2% higher than that of Shanyou 63, and the rice quality was also greatly improved. Inoculation identified resistance to rice blast and bacterial blight. The combination participated in multi-point comparison identification in 1996, and participated in the regional test and production test in Jiangsu Province from 1997 to 1998. It is also recommended to participate in the 1999 Southern Rice Regional Test.

[characteristics] according to the comparison of multiple varieties in 1996, the yield was 9.92t/hm2, which was 14.7% higher than that of Shanyou 63. In 1997, he participated in the regional trial of Jiangsu Province, and the average yield was 9.15t/hm2, which was 7.56% higher than that of Shanyou 63, which was significantly higher than that of Shanyou 63. In 1998, he continued to participate in the regional trial of Jiangsu Province, and the yield reached 10.04t/hm2, which was 8.64% higher than that of Shanyou 63. In 1998, he participated in the production trial in Jiangsu Province, and the average unit yield of 9.35t/hm2 was 8.2% higher than that of Shanyou 63, reaching a very significant level.

According to the plant protection department of Jiangsu Academy of Agricultural Sciences from 1997 to 1998, the resistance of Xieyou 507 to self-leaf blight pathogen KS-6-6, Zhejiang 173 and PX079 was 3. 5%. It showed disease resistance, the average resistance to JS49-6 was 1.5, and showed high resistance. Four physiological races ZC15, ZE3, ZGl and ZA49 of representative strains of rice blast in Jiangsu were all resistant to rice blast, and sheath blight was mild in the field and strong in lodging resistance.

The quality of Xieyou 507 rice is better, which is characterized by high roughness rate, high rice yield, slender grain, translucent grain and small white belly. According to the analysis of millet line of China Rice Institute, brown rice rate was 81.4%, milled rice rate was 73%, aspect ratio was 3.0,21.5% chalkiness, transparency grade 3, amylose content 24.7%, alkali elimination value grade 5, gel consistency 80mm, protein content 9.5%. The combination rice is white and glossy, loose and suitable, and has a good taste.

According to the analysis of regional trial data in Jiangsu Province, the whole growth period of Xieyou 507 is 145 days, which is 2 to 3 days longer than Shanyou 63, effective panicle 3.165 million / hm2, more than 315000 / hm2 than Shanyou 63, average panicle length 22.5cm, total grain per panicle 131.3, seed setting rate 87.2%, and 1000-grain weight 29.98g. The seedlings of the combination were short and erect, strong tillering ability, narrow leaves, darker leaves, 108cm of plant height, 17 total leaves, 5 elongated internodes of main stem, moderate tightness of plant type, good comprehensive characters, good ripening phase at maturity and no premature senescence.

[region and technology] sowing at the right time, cultivating strong seedlings with vegetables this group cooperates with one-season cypress rice planting, generally sowing at the end of April or early May, wet seedling raising or dry seedling raising. The dry seed sowing rate per hectare of wet seedlings is about 15Okg, and that of dry seedlings raised in fertilizer bed is about 35Okg per hectare. Dry raising seedlings advocate the use of super absorbent seed coating agent "dry nursery nanny" produced by Lixiahe Institute of Agricultural Sciences in Jiangsu Province, and dry raising and throwing seedlings advocate the application of super absorbent seed coating agent "dry throwing success", and the ratio of drugs to species is 1:3. In order to improve the rate of mature seedlings, dwarf and promote tillers, and prevent the harm of dead seedlings and evil seedlings. Rectify the seedling field, apply enough organic fertilizer, supplement phosphorus and potassium fertilizer, and apply nitrogen topdressing according to the seedling condition.

Xieyou 507 has good luxuriancy, so it is suitable to plant early in time to facilitate the growth of grain seedlings, the seedling age is about 30 days, and the leaf age is 6.0 to 6.5 leaves. The artificial planting density is generally 25.Ocm × 13.3cm, 300000 holes per hectare, and the planting density of basic seedlings is 900000 ~ 1.2 million / hm2;. The density of dry cultivation and throwing seedlings is 900000 ~ 1.2 million / hm2.

Xieyou 507 is fertilizer-resistant and lodging-resistant, the total nitrogen application in the field is controlled at about 225kg/hm2, basal fertilizer and tiller fertilizer account for 60%, ear-grain fertilizer 40%, base fertilizer is mainly organic fertilizer, quick-acting fertilizer and late-acting fertilizer are combined with phosphorus and potassium fertilizer. In terms of water-slurry management, seedlings should be planted in shallow water and tiller in thin water. About 25 days after transplanting, when the total number of seedlings in the field reached enough panicle seedlings (2.7 million ~ 3 million / hm2), the peak seedlings should be controlled within 4.2 million / hm2. In the later stage, it was dry and wet, raised roots and protected leaves, lived to be old, and cut off water 7 days before harvest.