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How good is the Super Large Grain King rice variety?
Zhezao 15 is a super-high-yield early indica rice new line developed by mutagenesis treatment using the super-high-yield genetic advantage of "Zhe 18500". After multi-point trial planting as early rice by the Zhejiang Academy of Agricultural Sciences, the yield generally reaches more than 600 kg per 667 sq m (1 mu). The characteristics and advantages of Zhezao 15 are introduced as follows: 1. Extremely strong tillering ability, low seed requirement. The effective tillers per plant can reach 12-15, and 1 kg of seed per 667 sq m of field is sufficient. 2. Cold tolerance at the seedling stage, disease resistance at the later stage. Strong cold tolerance at the seedling stage, so sowing can be appropriately advanced
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Yangdao 6: Breeding and Utilization of a New Medium Indica Rice Variety with High Quality, High Yield and Disease Resistance
Yangdao 6 is a new medium indica variety bred by the Institute of Agricultural Sciences of the Lixiahe Region of Jiangsu, using Yangdao 4 as the female parent, crossed with "Yan 3021", with the F1 seeds subjected to 60CO-gamma ray irradiation mutagenesis, and then developed through continuous directional selection. This variety combines high quality, high yield, disease resistance and wide adaptability, and is an ideal seed source for developing high-quality rice; it has already been demonstrated and promoted on a large scale in Jiangsu, Anhui, Hubei, Shanghai and other provinces and municipalities. Yangdao 6 is also a high-quality restorer line for two-line hybrid rice and three-line Honglian-type hybrid rice, and the formulated "Liangyou Peijiu" and "Yueyou 9
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How does the rice variety Xindao 97203 perform?
This variety was developed in 1997 by crossing Yujing 6 with Xindao 89402. Characteristics: moderate growth period, maturing more than 10 days earlier than Yujing 6; when grown as a wheat-stubble rice in the Yellow River rice region, the full growth period is about 140 days. Good plant type, leaves held upright, panicles erect, plant height about 100 cm. Strong tillering ability, high panicle-setting rate, 230,000-240,000 panicles per mu, 100-110 grains per panicle, 1000-grain weight 25 g-26 g. High yield; in the early-maturing group variety comparison, average yield per mu
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Introduction to Specialty Rice Varieties: Getting to Know Common Types of Specialty Rice
In recent years, the Department of Agronomy at South China Agricultural University has bred several specialty rice varieties, mainly including fragrant rice, fragrant black rice, red zhan rice and others. Their varietal characteristics and key cultivation points are briefly introduced as follows: 1. Wanxianxiangzhan No. 1: Wanxianxiangzhan is a variety bred by crossing Wanlixiang with Jingxian 89, and is an early-season, medium-maturity, high-quality fragrant rice. When planted in the Guangzhou area in the early season, the whole growth period is about 125 days, plant height is 90 cm, plant type is moderately compact and spreading, tillering ability is medium, each panicle has 150-200 grains, it has a certain fragrance, good eating quality, and good late-stage ripening color.
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Introduction to the Xieyou 5968 Rice Variety (National Approved Rice 2004020)
Variety source: Xieqingzao A x t5968. Breeding units: Taizhou Academy of Agricultural Sciences of Zhejiang Province, Zhejiang Hybrid Rice Seed Industry Co., Ltd. Approval status: upon review, this variety meets the national rice variety approval standards and has passed approval, with the number National Approved Rice 2004020. Characteristics: this variety is an indica three-line hybrid rice. When grown as single-season mid-season rice in the middle and lower reaches of the Yangtze River, the average whole growth period is 138.1 days, 4.8 days later maturing than the control Shanyou 63. Plant height 117
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The new high-quality indica rice variety Yuexiangzhan has the characteristic of a high harvest index
Yuexiangzhan is a "high harvest index type" conventional high-quality rice newly bred by the Rice Breeding High-Tech Research Laboratory of the Rice Research Institute of the Guangdong Academy of Agricultural Sciences. This variety passed the conventional regional trials for the early crop in 1996 and 1997 and the mixed regional trials of conventional early indica rice and hybrid rice in the South China rice region in 1997 and 1998. In February 1998, it passed the provincial variety approval of Guangdong Province for crop varieties. It has now become the control variety for the early-crop high-quality grain regional trial in Guangdong Province, a key variety promoted throughout the province, and has been included in a promotion project of the Ministry of Agriculture. Yuexiangzhan is a dual-purpose variety for both early and late crops. Its growth period for the early crop in Guangzhou is 125 days,
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Timely Control of the Rice Leaf Roller Is Essential and Cannot Be Delayed
The rice leaf roller is one of the major rice pests in our province. Its larvae damage the leaves, turning rice leaves into a mass of withered white. Especially when it attacks at the booting or heading stage, it will cause a sharp decline in rice yield. This pest has seven generations a year, and the second-generation larvae are the most numerous and cause the most serious damage to early rice. If control is not timely, it will break out in a major outbreak during the heading period, causing incalculable losses. For forecasting the rice leaf roller, the appropriate control timing should be determined based on the forecast of the occurrence period. Based on past conditions, investigation should begin 4 days after the peak of the moth flight
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Detailed introduction to the rice variety Jiayu 46
Recently, the Zhejiang Provincial Crop Variety Approval Committee approved 30 new crop varieties (combinations) including "Jiayu 46" and recommended them to farmers throughout the province. In order to help farmers better understand these new varieties (combinations). In 2002 and 2003, the average yield of this variety reached 461.5 kg per mu, an increase of 7.41% compared with the control "Jiayu 293"; the two-year average whole growth period was 110.3 days; the two-year provincial regional trial average effective panicles per mu was 201,000, filled grains per panicle 106
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Introduction to the rice variety Jiudao 23, formerly known as Jiu 9423
Breeding institution: Jilin City Academy of Agricultural Sciences, Jilin Province, China. Variety source: Qingxi 96 / Tengxi 138. Review opinion of the National Variety Approval Committee: This variety is a conventional japonica rice variety, with a whole growth period of 147 days, 4 days later maturing than the control variety Jiyujing. It has good yield performance and stable yield, relatively weak resistance to rice blast, and medium grain quality. It is suitable for planting in Jilin, Liaoning, Heilongjiang, and ** in areas with an effective active accumulated temperature above 2850°C and where rice blast occurs lightly. Upon review, this variety meets the national variety approval standards and has been approved.
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Pests and Diseases Increase in Single-Season Rice, Do Not Relax Control Efforts
This year, the single-season rice planting area in our province is 6.0143 million mu. Currently, most single-season rice has entered the late tillering stage to the young panicle differentiation stage. According to recent incomplete statistics from various regions, various pests and diseases have occurred in 2.5 million mu of single-season rice fields, an increase of 40% compared to the same period last year, including 1 million mu of rice planthopper, 500,000 mu of rice leaf roller, 400,000 mu of stem borer, 400,000 mu of sheath blight, and 80,000 mu of rice blast. 1. Rice planthopper: This year, the occurrence of rice planthopper is severe, and the large amount of foreign insect sources migrating in is rare in past years.
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