How can premature senescence be effectively prevented in rice cultivation?
What causes premature senescence in rice? How can premature senescence be prevented when growing rice? Is there any fellow gardener who knows about this and can help explain? Premature senescence in rice can lead to a major reduction in yield. Farming Network has compiled the causes of premature senescence in rice and the control methods, listed below for fellow gardeners' reference. Causes of premature senescence in rice: premature senescence...
What causes premature senescence in rice? How can premature senescence be prevented when growing rice? Is there any fellow gardener who knows about this and can help explain?Premature senescence in rice can lead to a major reduction in yield. Farming Network has compiled the causes of premature senescence in rice and the control methods, listed below for fellow gardeners' reference.
Causes of premature senescence in rice:
Premature senescence refers to the premature decline of vital functions in parts such as the leaves and stems during the late growth stage of rice, which weakens the photosynthetic capacity of functional leaves, reduces the source of irrigation substances, and causes some plants to show premature senescence.
Premature senescence in rice occurs because excessive early growth deepens the conflict between the population and individual plants in the late growth stage, accelerating the aging rate of roots and leaves;
Another cause of premature senescence is improper water and fertilizer management in the late stage, with water cut off too early and insufficient supply of nitrogen and phosphorus, so that the vegetative growth of the plants cannot receive nutrient supplementation. In addition, some soils have poor permeability, with more oxygen deficiency and toxic reducing substances, which causes poor root development in the late stage of rice, weakens the ability to absorb nutrients, and leads to weakened aboveground growth.
Methods for preventing premature senescence when growing rice:
Method 1: Carry out scientific water management. From full heading to the grain-filling stage, irrigate with shallow water to raise temperature and promote ripening; from the milk-ripe stage to the yellow-ripe stage, use intermittent irrigation.
Method 2: Fertilize rice reasonably, prevent fertilizer deficiency in the middle stage, and skillfully apply ear and grain fertilizer in the late stage to improve photosynthesis.
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