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Duckling prices rebound, but caution still needed when adding to flocks
Duck farming market analysis: duckling prices stage a comeback, but caution still needed when restocking
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Management Measures and Technical Points for Rice during the Jointing and Panicle Elongation Stage
The jointing and panicle elongation stage refers to the period from jointing and the beginning of young panicle differentiation to just before heading, generally 25-36 days for middle-season rice. 1. Growth and development characteristics and growth appearance during the jointing and panicle elongation stage (1) Growth and development characteristics During this period, on the one hand, stem elongation is the center, completing the growth of the last few leaves and root system and other vegetative organs; on the other hand, reproductive growth centered on young panicle differentiation takes place. During this period some tillers gradually die, and the total number of stems and tillers declines compared with the earlier stage, so it is an important period for preserving tillers and increasing panicles. From
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Cold damage prevention and control methods and key technical points for rice at the panicle elongation stage
Rice pollination at the panicle elongation stage greatly needs temperature and oxygen. During this period, cold winds blowing from the northeast are very likely to occur, causing poor pollination, empty and shriveled grains, and reduced yield. Prevention and control techniques for cold damage. First, accelerate rice pollination. From late July to early and mid-August, due to meteorological causes of atmospheric circulation, the temperature generally drops to around 17, causing rice flowers to remain closed and not open, affecting rice pollination and producing empty and shriveled grains. For this kind of obstructive cold damage, scientific management of the paddy field should be strengthened so that rice accelerates through the pollination period and avoids
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How to use paclobutrazol and uniconazole for raising strong rice seedlings
Paclobutrazol and uniconazole are both plant growth regulators. When applied in rice seedling raising, they have good effects on controlling growth and promoting tillering, preventing seedling stiffness and seedling rot, and increasing panicles, grains and yield. The method for using paclobutrazol is: when the seedlings have one leaf and one heart, evenly spray 100 kg of paclobutrazol solution at a concentration of 300 ppm per mu of seedling field, ensuring no missed spraying and no repeated spraying. When spraying, drain the water from the seedling field and keep the field surface free of standing water. The method for using uniconazole is: soak the seeds with uniconazole solution at a concentration of 50-200 ppm for 24-48 hours, with a ratio of seeds to chemical of 1:1.2-1.5. During soaking, stir 3-4 times so that the seeds absorb the chemical evenly. After soaking, rinse with clean water before sprouting. For seeds treated by soaking with uniconazole, soak and sprout 1 day earlier than conventional practice.
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Detailed introduction to the Liuyou 105 rice variety
(1) Variety source: This variety is a medium indica early-maturing variety bred by the Chengdu Institute of Biology, Chinese Academy of Sciences, using 613A as the female parent and Mingshen 105 as the male parent. (2) Characteristics: Strong growth vigor at the seedling stage, compact and moderate plant type, erect flag leaves, medium tillering, uniform heading, and good color change in the later stage. The average number of grains per panicle is about 150, the seed-setting rate is 80-81%, the 1000-grain weight is 28-30 grams, the grains are transparent, and the taste is good. The whole growth period is 151 days, 4.2 days longer than the control Shanzhai 8. Resistance identification: neck blast grade 1-5. (3) Yield
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Detailed introduction to the rice variety Lian 9805
Lian 9805 was bred by the Lianyungang City Agricultural Technology Extension Center in 1995 through crossbreeding the high-yield, disease-resistant line H408 with the Japanese premium variety Gekkou. It entered the Lianyungang City variety comparison trial in 2000, and in 2001 took part in the national regional trial organized by the Ministry of Agriculture, where it showed high yield, good quality and strong resistance. In 2002 it exceptionally joined the production trial and was listed by the Jiangsu Provincial Department of Agriculture and Forestry as a key project of the province's three agricultural programs and a key demonstration and extension variety for the Huaibei region. 1. Main characteristics. 1. Yield level. Per panicle 1
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How to grow direct-seeded rice? Experience shared by Jingtoushan Farm
Our farm has nearly 700 hectares of paddy fields. We began direct seeding of rice in 1987 and fully promoted it starting in 1999, with a 100% success rate. The key points of this direct seeding technique are mastering the following three critical stages. 1. Land preparation stage. Plow the paddy field, break up the soil, and irrigate; either machine leveling or oxen leveling will do. Then use a leveling bar to smooth the field flat. Use a homemade ditching board to open the furrows. The ditching board is 2 m long, 45 cm wide, and 3 cm thick. On the wooden board, nail 2 handles on each side, each 30 cm long, with a width of 1.6 m between the handles, for attaching ox harness ropes
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Detailed Explanation of No-Till Potato Cultivation with Rice Straw Mulching
First, selecting the field and preparing the beds. Choose a neutral or slightly acidic paddy field. When harvesting rice, it is best to leave stubble 15-20 cm high. Before sowing, first mark out beds and open furrows, with a bed width of 1.4-1.6 m, a furrow width of 20-30 cm, and a furrow depth of 15-20 cm. When opening the furrows, scatter the excavated soil evenly in the middle of the bed, and shape the bed surface into an arched back to facilitate drainage. Second, seed potato treatment. Select virus-free seed potatoes that are free of pests and diseases, have smooth and fresh skin, and weigh more than 20 g each. Before sowing, according to the distribution of the buds and the
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How to treat rice damaged by metsulfuron-methyl herbicide injury?
Remedial measures: After transplanting (or throwing) seedlings in fields where herbicides have been applied, field inspections should be strengthened. When herbicide injury occurs, measures must be taken immediately to reduce losses. 1. Re-transplant (re-throw) seedlings: If diagnosis confirms severe seedling injury, with more than 80% of seedlings yellowed and some withered, seedlings must be gathered for immediate re-transplanting (re-throwing). Method: First drain the field water, lightly harrow once, then drain the muddy water, then level the field and transplant (throw) seedlings. In recent years, sowing and transplanting (throwing) seasons have been advanced by 7-15 days compared to traditional seasons. From discovery of injury to re-transplanting is generally 5-10 days, so the seasonal conflict is not prominent. 2. Strengthen fertilizer and water management and intertillage: For fields where injury is found, first drain the field water that has been treated with herbicide and irrigate with fresh flowing water. Next, perform intertillage to break up the original herbicide liquid layer and turn the herbicide adsorbed by the surface soil into deeper soil, reducing the effect of the herbicide on rice roots. 2-3 days after intertillage, apply 2-4 kg of imported compound fertilizer per mu to promote root growth and leaf development and accelerate growth. 3. Apply rooting agent: After draining, intertilling and fertilizing, it is best to apply 200 kg per mu of rooting agent ABT at a concentration of 200 mg/kg, which has a good effect on promoting roots. The number of roots can increase by 25%-40%, growth speed accelerates, and the sufficient seedling stage is delayed by only 5-7 days.
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Purple-marked rice male sterile lines developed in Guangxi
The rice male sterile lines carrying the purple-leaf marker trait, Xianhong A and Zhihong A, developed by the research team led by Guangxi Outstanding Expert Researcher Liang Shirong and Guangxi Academy of Agricultural Sciences Vice President Researcher Deng Guofu, passed the field technical appraisal organized by the office of the Guangxi Regional Crop Variety Approval Committee and conducted by a relevant expert group on August 3, 2007. After strict field investigation and indoor microscopic examination, and after hearing the research team's technical report and answers to questions, the expert group unanimously concluded that Xianhong A and Zhihong A have stable agronomic traits, stable male sterility, and good flowering
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