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Key Technical Points for Post-Flood Care of Submerged Rice
After rice is submerged, in view of the actual situation of severe damage to the root system and leaves and a serious decline in the total number of stems and tillers, measures should be taken to nourish the roots, protect the leaves and promote tillering, so as to increase the percentage of productive panicles and strive for heavier grains. 1. Make an all-out effort to drain the standing water from the fields. The standing water in the fields should be drained as early as possible, and the fields should be exposed and the seedlings hardened to improve the soil's physical and chemical properties and remove toxic substances. For fields submerged for a relatively long time, the water can be drained completely in one go during rainy weather; in hot weather with strong sunlight, dehydration should be carried out gradually, first allowing the upper part of the rice plants to emerge above the water surface, then dehydrating at night to aerate the soil, and irrigating by day and exposing at night, so as to help the rice recover its growth. 2.
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Simple Diagnosis and Control Methods for Rice Deadheart
I. Simple Diagnosis of Rice "Deadheart" 1. "Deadheart" caused by insect pests. Sesamia inferens, Chilo suppressalis, Scirpophaga incertulas, mole crickets and other pests damaging rice can all cause "deadheart," and the main differences are: (1) Sesamia inferens: the insect holes are large and there is much frass, and the frass is generally deposited between the rice leaf sheath and the stem. The leaf sheaths and leaves of the damaged rice all turn yellow. The damage is more severe at the edges of the rice field and lighter in the middle of the field. (2) Chilo suppressalis: after the eggs hatch, the young borers first gather inside the rice leaf sheath to feed and cause damage; on the outside of the damaged leaf sheath, water-soaked yellow spots first appear, then it gradually turns yellow
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Introduction to the Characteristics and Traits of the Rice Variety Liaoyou 18
Liaoyou 18 (5216A x C418) is a high-yield, high-quality, multi-resistant, strongly heterotic hybrid japonica rice variety developed by the Rice Research Institute of Liaoning Province over 8 years using the three-line breeding method after artificial hybridization. It was approved by the Liaoning Provincial Crop Variety Approval Committee in 2001. I. Characteristics and Traits 1. Seedling-stage traits: The seedlings are robust with strong rooting ability; the leaves are broad, thick and dark green; after transplanting, the seedlings revive quickly and grow and develop rapidly. 2. Adult-plant traits: Plant height is 115-120 cm; the top three leaves are erect and inwardly rolled; the stems are thick and elastic; the basal internodes are relatively short; tillering ability is fairly strong, with more than 20 tillers per hill under sparse planting.
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Introduction to the Characteristics of the Liuyou 121 Rice Variety
Variety source: A hybrid japonica rice combination developed by the Rice Research Institute of the Anhui Academy of Agricultural Sciences and the Anhui Seed Company by crossing Liuqianxin A x HP121. Approval status: Approved in 1998 by the Anhui Provincial Crop Variety Approval Committee. Characteristics: This combination has a plant height of 105 cm, thick and sturdy stems, upright leaves, and strong tillering ability. The total number of grains per panicle is about 140, the seed-setting rate is about 80%, and the 1000-grain weight is 26 grams. The average yield is 500 kg per mu. In 1995, it was rated as a high-quality rice of Anhui Province.
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Green copper emulsion is highly effective against rice bacterial leaf streak
In an average epidemic year, the control efficacy reaches 85-91%, which is 10-15 percentage points higher than that of Japanese-made chlorothalonil. Method of use: in an average epidemic year, spraying twice is sufficient. The first spray is applied at stages 2-4 of young panicle differentiation in rice; 7 days after treatment the disease tends to stabilize, new acute lesions decrease significantly, and the original lesions stop developing after turning yellow. The second spray is applied 10 days later, using 100 mL of 12% green copper emulsion per mu each time, diluted 500-600 times for spraying. After 20 days, the rice leaf color turns noticeably greener, and the newly emerged flag leaf and the second leaf from the top have no
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New Green Intensive Rice Cultivation Technology for Cold Regions
Agricultural science and technology innovation is the fundamental measure for improving overall agricultural production capacity. Safety, ecology, increased income and increased efficiency are the new directions for rice production development. The new cultivation technology - intensive rice cultivation - has been successfully tested over four years at Suihua Yong'an Farm. 1. Cultivation characteristics: saves seed, saves water, saves labor, saves seedling supplies, saves seedbed area, while being environmentally friendly, increasing yield, reducing costs, increasing benefits, and having wide adaptability. It is an advanced rice production cultivation technology in the world today. 2. Main cultivation technical measures and characteristics: 1. Select and breed early-maturing, high-yield, stress-resistant, strongly tillering
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Characteristics and Cultivation Introduction of the Lvyuanzhan Rice Variety
Lvyuanzhan is a new dual-purpose (early and late season) variety bred by the Rice Research Institute of the Guangdong Academy of Agricultural Sciences through crossing Lvzhenzhan 8 with Sanyuan 92. In the 1997 late-season provincial regional trial (high-quality grain group), it yielded 375.86 kg per mu, a 2.93% increase over the control Jingxian 89, with a maturity period comparable to Jingxian 89. It was retested in the 1998 provincial regional trial. In 1996-1997, it was trial-planted on a small scale in Guangzhou, Shanwei, Zhaoqing and Yunfu, yielding 425-450 kg per mu in low-to-medium fertility areas and around 500 kg per mu in medium-to-high fertility areas, with the highest yield
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Introduction to the rice variety Mian 2 You 838
Characteristics: This variety is an indica-type three-line hybrid rice. When grown as a single-season mid-season rice in the upper reaches of the Yangtze River, its average whole growth period is 150.4 days, 2.7 days earlier than the control Shanyou 63. Plant height is 110.7 cm, plant type is moderate, panicle-grain weight is well balanced, lodging resistance is relatively strong, and color change at maturity is good. Tillering ability is relatively weak, and cold tolerance is strong. The number of effective panicles per mu is 159,000, panicle length is 25.2 cm, total grains per panicle is 163.0, seed setting rate is 81.8%, and 1000-grain weight is 28.9 g. Resistance: rice blast grade 9, bacterial leaf blight grade 7, brown planthopper grade 7
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Detailed Introduction to Rice Variety Minghui 63
[Basic Information] Minghui 63 was crossed as the female parent with Nannong 3005. Starting from the F2 generation, excellent individual plants were selected, and high-quality grains were selected through brown rice selection. South propagation was used to advance generations year after year, with seasonal selection in Yangzhou, and inoculation identification for resistance. In the F5 generation, paired test crosses were made with Xieqingzao A. In the 1994 main season, recovery ability and heterosis identification were conducted. Among the 121 identification lines selected, line No. 41 performed most outstandingly, with good plant and leaf morphology, coordinated panicle and grain structure, more panicles in the testcross F1, good luxuriance, plump and full grains, high seed-setting rate, and relatively good grain quality. This line was then further
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Mingyou 98 (formerly known as Wuyou No. 1) (Rice)
Variety source: M98A x Fengkui 98003. 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 133.8 days, 1.7 days earlier than Shanyou 63 (CK). Plant height is 117.6 cm, plant type is moderate, growth vigor is luxuriant, uniformity is average, and color change at maturity is medium. The number of effective panicles per mu is 171,000, panicle length is 24 cm, total grains per panicle are 159.5, seed setting rate is 85.6%, and 1000-grain weight is 27.1 g. Resistance:
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