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How to prevent rice sheath blight? Beware of high temperature and high humidity weather
Sheath blight, also known as banded leaf blight, has a great impact on the growth and development of rice. It not only weakens the absorption capacity of the root system, but also affects the photosynthesis of leaves, resulting in an increase in empty and shriveled grains, a decrease in 1000-grain weight and a decline in yield. Therefore, attention should be paid to the prevention and control of sheath blight in production. The following introduces the main symptoms, occurrence characteristics and control methods of this disease for reference. Main symptoms When rice leaf sheaths are infected, small dark green water-soaked spots with blurred edges appear near the water surface, later expanding into oval or cloud-like shapes, with the center grayish green
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Four Effects on Rice After Exposure to High Temperatures
Rice has different temperature requirements at each growth and development stage, and there is an optimal temperature for each. If the upper or lower critical temperature limit is exceeded, abnormal phenomena, namely physiological disorders, will appear in the growth and development of rice. Therefore, attention should be paid to the effects of high temperatures on rice. 1. Effects of high temperatures on each growth stage of rice. 1. Heading and flowering stage. Generally, rice prefers a temperature of 25-30°C during the heading and flowering stage. When the temperature is below 25°C or above 30°C, large numbers of empty and shriveled grains will appear in rice. At the same time, high temperatures also
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Detailed Explanation of a Reference Fertilization Model for High-Yield Rice
The soil-testing formula fertilization model for a rice yield of 450-550 kg per mu is as follows: (1) Total fertilizer amount and ratio The nitrogen, phosphorus and potassium ratio should be about 1:0.5:0.9, and the total amounts should be approximately: nitrogen 10-13 kg, phosphorus pentoxide 5-7 kg, potassium oxide 8-12 kg. (2) Fertilization plan 1. Basal fertilizer: (1) Organic fertilizer: generally for early rice, apply 1000-2000 kg of fresh green manure per mu, or 500-1000 kg of barnyard manure, or commercial organic
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Introduction to the high-yield rice variety Panjin No. 2
Panjin No. 2 (H148) is a super-high-yield new rice variety developed by our institute from a cross between line 27, which carries indica (IR36) bloodline, and Huangjin 300 grains in 1988, followed by multiple generations of selection. After it stabilized, it entered identification trials in 1992, entered the institute's variety comparison trial in 1993, and began external introduction and trial planting in 1995, fully demonstrating its characteristics of high yield, multiple resistance, and good quality. I. Characteristics and traits 1. Seedling stage: strong seed germination vigor, fast and uniform emergence, well-developed root system, sturdy seedlings, resistance to low temperature and tolerance to salinity and alkalinity
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What kind of soil standards do high-yield rice require?
(1) Distinct profile horizons, deep plough layer, good texture. For high-yield rice, a plough layer depth of about 20 cm is best. The plough layer should be fertile, thick and soft, with a high aggregate content, good structure and aeration, and suitable tillage properties. If the plough layer is too shallow, rice roots develop poorly; if too deep, floating mud forms easily, which is unfavourable for rice rooting and early growth. The texture should be moderate, neither too sandy nor too clayey: when dry-ploughed, the plough does not turn up large clods and the soil breaks up easily under harrowing; when wet-ploughed, it does not settle into a hard pan; when drained and dried, it does not crack widely, and the cracks close up easily after re-flooding.(2) Organic
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Introduction to the Gangyou 725 Rice Variety and Its Key Cultivation Points
This variety was developed by the Mianyang Institute of Agricultural Sciences in Sichuan Province. Main characteristics: this variety is a three-line hybrid rice variety of the medium indica late-maturing type. Its whole growth period is comparable to that of Shanyou 63, it has good yield potential and wide adaptability, and it is susceptible to rice blast. Suitable areas: this variety is suitable for planting as single-season medium rice in the flatland and hilly areas of Sichuan and in areas of Guizhou Province below 1100 m in altitude.
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How good is the Gangyou 22 rice variety? Characteristics and yield introduction
Breeding institutions: Crop Research Institute of Sichuan Academy of Agricultural Sciences and Rice Research Institute of Sichuan Agricultural University. Approval status: approved in 1996 by the Sichuan Provincial Crop Variety Approval Committee and the Guizhou Provincial Crop Variety Approval Committee, and in 1998 by the National Crop Variety Approval Committee. Variety approval number: Guoshendao 980009. Variety source: Gang 46A x CDR22. Characteristics: medium indica late-maturing hybrid rice. Plant height about 110 cm, moderate plant type, thick stems
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Jinxing No. 1 (formerly code 92-10) (rice)
Breeding institution: Tianjin Rice Research Institute. Approval status: approved by the Tianjin Crop Variety Approval Committee in 1996, and by the National Crop Variety Approval Committee in 2000. Variety approval number: Guoshen Dao 20000010. Variety source: Jin 521 / Zhonghua No. 8. Characteristics: a large-panicle, large-grain japonica rice variety. Compact plant type, plant height 106 cm, well-developed root system, thick and sturdy stems. Leaf color dark green, leaves broad and thick, functional leaves long, maturity with plants still green, small angle between leaves and stems, plant appearance neat.
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Water-saving and high-yielding rice, with a jasmine fragrance in every bowl
Wearing shoes to go into the paddy field, water-saving rice cultivation has become a reality. After the team led by researcher Luo Lijun at the Shanghai Agrobiological Gene Center created the world's first hybrid upland rice "Huhan 1A", it has achieved another breakthrough. Hanyou 3 has been approved, and under the condition of saving 50% of water resources, its actual yield per mu exceeded 500 kg for the first time. Shanghai's hybrid upland rice research took scientists 10 years, screened 10,000 resources, and selected more than 100 relatively drought-tolerant resources as parents for breeding. "The characteristic of hybrid rice is high yield, just like
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Growing button mushrooms (Agaricus bisporus) in winter-fallow rice fields delivers good returns
In 2004, our county carried out cultivation demonstrations of growing button mushrooms (Agaricus bisporus) in winter-fallow rice fields across 16 townships. After the late rice harvest, rice straw and other materials were used as the main raw materials and composted and fermented into growing substrate, making use of the winter temperature and light resources and the idle winter season of the rice fields; open-field cultivation of button mushrooms achieved notable returns. Chen Yeru, a farmer at the Lixian Institute of Agricultural Sciences, is a button mushroom cultivation demonstration household, with a family of 4 people and 2 laborers, and had never previously cultivated edible fungi. After technical training at the Lixian Edible Fungi Research Institute, he set up on his own contracted field
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