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Operating and Maintenance Methods for Rice Seedling-Raising Greenhouse Seedbeds
The rice seedling-raising seedbed greenhouse is mainly composed of a greenhouse frame, light-transmitting covering materials (including plastic film, plastic panels, PC boards, etc.), several individual seedbeds and a spray irrigation system. This device features a compact structure, high land utilization rate and convenient operation. Operating methods 1. Before installation, the site must be leveled...
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How to prevent and control pests and diseases during the rice seedling-raising period
During the rice seedling-raising stage, phenomena such as stunted rooting, yellowing, and stalled growth are prone to occur. For fields where stunted rooting has already occurred, drainage should be carried out immediately to increase temperature and aeration and reduce toxicity, and at the same time quick-acting nitrogen, phosphorus, and potassium fertilizers should be applied, along with supplementary micro-fertilizers, with zinc fertilizer being the key; where deficiency symptoms are present, the corresponding deficient nutrient fertilizer should be applied promptly. Withdraw the water and sun the field, or use circuitous...
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Common Problems in Rice Seedling Raising and Countermeasures
Cultivating robust seedlings is the key to high rice yields. By analyzing common problems that arise during seedling raising, corresponding solutions are proposed to provide technical reference for cultivating high-yield robust seedlings. (I) Common problems in machine-transplanted seedling raising and countermeasure techniques 1. Poor seed emergence. Machine-transplanted seedling raising often suffers from poor seed emergence, uneven emergence, and...
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Key Technical Points and Operation Methods for Single-Application Fertilization of Rice
Distribution Rice bacterial leaf streak, commonly known as rice fine streak disease, is one of the important worldwide rice diseases. Its pathogen belongs to the genus Xanthomonas bacteria, and the bacteria mostly invade through leaf stomata; symptoms can appear at any growth stage of rice. The lesions are short and fine narrow streaks, with the stripes appearing between the leaf veins; when viewed against the light...
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Timely early transplanting of rice helps increase yield
As a supporting seedling-raising method for manual transplanting, the wet seedling-raising technique for rice is suitable for seedling raising across different regions, rice-growing seasons and different types of rice varieties, and is widely adopted in China. This technique is easy to operate, widely applied and highly adaptable; when mastered properly, it produces seedlings of good quality and high yield. 1. Seedbed preparation...
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What is the effect of different fertilizer ratios on rice yield?
When rice shows premature senescence from the heading to the maturity stage, it leads to poor grain filling, an increase in blighted grains, and reduced yield. There are many factors that cause premature senescence in the late growth stage of rice. First, improper cultivation management. If the planting density is too high, the plants grow thin and weak; if too much nitrogen fertilizer is applied in the early and middle stages, while phosphorus, potassium and trace element fertilizers are applied...
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Direct-seeded rice skips the need for seedlings and transplanting, tastes better, and saves 15% water
No more bending over in the fields! Rice can also be direct-seeded, skipping seedlings and transplanting, tasting better and saving 15% water
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Fertilizer Requirements and Key Fertilization Techniques for Rice at Different Growth Stages
I. Fertilizer Requirements of Rice. Nitrogen, phosphorus, and potassium are the nutrient elements that rice requires in relatively large amounts while soils are relatively deficient in them. Generally, for every 100 kg of rice grain produced, about 1.6-1.9 kg of nitrogen, 0.8-1.3 kg of phosphorus, and 1.8-3.8 kg of potassium are absorbed, with a ratio of approximately 1:0.5:1.3. Nitrogen uptake is highest from the greening stage to the tillering stage...
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Identifying Zinc Deficiency Symptoms in Rice and Techniques for Skillfully Applying Zinc Fertilizer in Paddy Fields
Zinc is one of the essential trace elements for the growth and development of rice. Zinc deficiency in rice shows obvious symptoms. When rice is deficient in zinc, chlorotic yellow-white spots first appear in the midrib area of the lower leaves, with reddish-brown spots and irregular patches forming on them, which then gradually expand into reddish-brown streaks, turning reddish-brown and drying from the leaf tip downward, and from...
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Key Technical Points for Controlling Diseases, Pests and Weeds in the Field After Rice Seedling Broadcasting
Southern rice black-streaked dwarf disease is a viral disease mainly transmitted by the white-backed planthopper. It mainly harms staple grain crops such as rice and corn. Once a crop is infected, the plant becomes stunted, tillering increases, and in the later growth stage the diseased rice cannot head or set grain, sometimes resulting in a complete loss of harvest, seriously threatening the safety of our county's grain production. In order to scientifically...
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