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What to Do About Rice Panicle Sprouting? Cause Analysis and Prevention Methods
Causes of Rice Panicle Sprouting and Prevention Methods
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Causes of Sprouting on Rice Panicles and the Best Application of Panicle Fertilizer and Phosphorus Requirements
Causes of Rice Panicle Sprouting and Prevention Methods
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What are the management measures for rice during the jointing and panicle elongation stage?
Currently, rice growth across the city has successively entered the jointing and panicle elongation stage, an important period of transition from vegetative growth to reproductive growth and a critical period that determines yield. Doing a good job of field management in the middle and late stages of rice is crucial for ensuring sufficient panicles, striving for large panicles, shaping a high-yield plant type, and building a good foundation for high yield. I. Seedling growth characteristics According to a survey on July 21, the average leaf age of machine-transplanted rice was 12.31 leaves, 0.49 leaves more than the same period last year; the average leaf age of direct-seeded rice was 10.31 leaves, 0.56 leaves more than the same period last year; the total number of stems and tillers was 38.63 for machine-transplanted rice
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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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16% Exianqing is the first choice for controlling rice "small panicle head"
For many years, in some major rice-producing areas such as Jiangsu, the phenomenon of "small panicle head" (also called small-grain distorted panicle) has appeared continuously over many years under multiple varieties, multiple planting levels, and multiple ecological conditions in large-scale production. Its characteristics are: small panicles, small glumes, cracking of the inner and outer husks after grain filling, partial exposure of rice grains, and small grains with dark brown color. It is especially severe in the Lixiahe area, coastal areas, along the Huai River, along the Yangtze River, and hilly areas of Jiangsu Province. It is estimated that in recent years the affected area in Jiangsu Province alone has been about 100,000 hectares each year, reducing rice output by more than 100 million kg, and cumulatively causing about 500 million kg of rice yield loss.
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What are the precautions during the young panicle differentiation stage of rice
Precautions during young panicle differentiation of rice
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Key Field Management Techniques for Rice During the Jointing and Panicle Development Stage
Field Management Techniques for Rice During the Jointing and Panicle Development Stage
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