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Methods for Extending Rice Seedling Age and Key Points for Preparing to Transplant Rice While Waiting for Rain as a Drought-Resistance Measure
In a normal year, the seedling age for machine-transplanted rice is about 30 days, about 40 days for seedling-throwing rice, and about 50 days for water-raised seedlings. If the water for transplanting comes late, the seedling age must be extended to more than 60 days in order to wait for water before transplanting. First, sow sparsely to cultivate strong seedlings of extended age. That is, by expanding the area of the seedling-raising bed and reducing the sowing rate per square meter, the tillering-stagnation period of the seedlings is prolonged, which can effectively increase the seedling-age flexibility of seedlings sown early at the proper time and improve seedling quality; this can both raise per-unit yield and resolve the contradiction of having no water for transplanting in the early period.
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Sanxiangyou 714 rice variety (formerly known as 316a/y0714)
Variety source: Sanxiang A (316AA) × y0714. Characteristics: This variety is an indica three-line hybrid rice. When grown as a double-cropping late rice in the middle and lower reaches of the Yangtze River, the average whole growth period is 123.9 days, 2.7 days later than the control Shanyou 46. Plant height is 111.1 cm; the plants are tall and grow vigorously, with average uniformity. The number of effective panicles per mu is 181,000; panicle length is 24.7 cm; total grains per panicle is 123.4; seed setting rate is 76%; and 1000-grain weight is 30.1 g. Average resistance performance over two years: rice blast grade 9,
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Characteristics and traits of the Shanyou 36 Fu rice variety
Breeding institution: Wenzhou Institute of Agricultural Sciences, Zhejiang Province. Approval status: approved by the Hunan Provincial Crop Variety Approval Committee in 1992, by the Guizhou Provincial Crop Variety Approval Committee in 1993, by the Zhejiang Provincial Crop Variety Approval Committee in 1993, and by the National Crop Variety Approval Committee in 1994. Variety registration number: GS01002-1993. Variety source: Zhenshan 97A x IR36 Fu. Characteristics and traits: a hybrid indica rice variety. Compact plant type, plant
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Introduction to the Characteristics and Cultivation Key Points of the Shanyou 86 Rice Variety
(1) Variety source: Developed in 1992 by the Wanxian City Agricultural Science Institute by crossing "Zhenshan 97A" with the self-bred restorer line "Wanhui 86". (2) Characteristics: It is a medium-maturing medium indica rice. The whole growth period is 146 days, comparable to the maturity period of the control variety "Aiyou S". Plant height is 106 cm, with strong tillering ability. Seedling growth is vigorous, plant type is relatively good, stems are thick and resistant to lodging, and late-stage ripening color is good, with about 180,000 effective panicles per mu. Average grains per panicle is 138.9, seed-setting rate is 83.4%, and 1000-grain weight is 28.4 g. Grains are golden yellow, awnless
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Shanyou Duoxi No. 1 Rice Variety Introduction
Breeding unit: Neijiang Agricultural Science Research Institute, Sichuan Province. Approval status: approved by the Sichuan Provincial Crop Variety Approval Committee in 1993, by the Guizhou Provincial Crop Variety Approval Committee in 1995, by the Fujian Provincial Crop Variety Approval Committee in 1996, and by the National Crop Variety Approval Committee in l998. Variety approval number: Guoshen Dao 980010. Variety source: Zhenshan 97A X Duoxi No. 1. Characteristics: a medium indica late-maturing three-line hybrid rice combination. Plant height about 110 cm, per mu
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National rice gene breeding platform established with Shanghai taking the lead
According to the latest news released by the Shanghai Academy of Agricultural Sciences, a nationwide rice gene resource and molecular technology breeding platform, established with the lead of units including the Shanghai Agricultural Biological Gene Center, has achieved sharing across society, has mapped a large number of genes related to rice yield, grain quality, stress resistance and other traits, and has bred multiple new rice varieties and new combinations. According to relevant personnel from the Shanghai Academy of Agricultural Sciences, the main goals of current rice variety improvement are to further increase yield potential, improve quality and enhance stress resistance. The history of rice research shows that breakthrough
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Introduction to the Rice Variety Shaonuo 9714
Characteristics: This variety is a japonica-type conventional glutinous rice. When grown as a single-season late rice in the middle and lower reaches of the Yangtze River, its average whole growth period is 147.7 days, 2.1 days later maturing than the control Xiushui 63. Plant height is 96 cm, the plant type is moderate, the plant is relatively short, the population is uniform, the flag leaves are upright, growth is vigorous, and color change at maturity is good. The number of effective panicles per mu is 197,000, panicle length is 19.4 cm, total grains per panicle is 113, seed-setting rate is 90.1%, and 1000-grain weight is 27.7 g. Resistance: rice blast grade 7, bacterial leaf blight grade 3, brown planthopper grade 9
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Introduction to the Characteristics of the Rice Variety Shaoxian No.1
Shaoxian No.1 (formerly named Shao 93-9) is a new medium-maturing, early-leaning early indica variety bred by the Shaoxing City Academy of Agricultural Sciences in Zhejiang Province through crossing Yueguo No.1 with Huilun 422, followed by backcrossing with Yueguo No.1. Characteristics: Shaoxian No.1 is medium-maturing and early-leaning, with a whole growth period 3 d earlier than the control variety Zhe 852; it has wide adaptability and is suitable for direct seeding or seedling-throwing light cultivation as early and late season rice in double-cropping rice areas of Zhejiang Province. It has medium tillering, a compact plant type, and strong cold tolerance, especially during the heading and flowering period when it can resist the influence of adverse climatic factors.
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What are the latest rice breeding technologies? A full analysis of the world's cutting-edge methods
Research on salt-tolerant rice breeding The aims of this research are: 1. To enable new salt-tolerant rice to adapt to cultivation in saline-alkali land. 2. To make full use of seawater irrigation when freshwater is scarce. Abroad, there have been reports of salt-tolerant crops such as tomato, melon and barley. Salt-tolerant rice bred by the University of Sussex in the UK can grow vigorously in the field, but the complexity of regulating salt content in the field must be recognized. Research on genetic engineering of salt-tolerant rice is quite active in the UK. Researchers insert genes from salt-tolerant rice into rice,
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Four things to note when harvesting rice, don't overlook these details
The following four points should be noted before and after rice harvest. 1. Drain early. Drain the water in the paddy field as much as possible; if necessary, dig ditches to drain the water in low-lying areas early and dry the field. 2. Harvest at proper maturity. For manual harvesting, do it when more than 95% of the rice husks in the field have turned yellow, the grains have hardened, and the rice grains are translucent. Mechanical harvesting can be a few days later. 3. Mind the method. Manual cutting and drying can increase the 1000-grain weight and raise yield, while the rice grain has good market quality and a high germination rate. When using a combine harvester, it is best
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