What is the reason why rice does not bear fruit?
It is understood that in the budding and heading stage, rice is extremely sensitive to temperature, the most suitable temperature is 25 to 30 degrees Celsius, more than 30 degrees Celsius will have an adverse effect. In the case of continuous high temperature above 35 degrees at booting stage, the floral organ of rice will be underdeveloped, the pollen will be stunted and the vigor will decline. If there is a continuous high temperature above 35 degrees in the heading and flowering stage, heat damage will occur, which will affect the rupture of pollen and the elongation of pollen tube, resulting in the formation of empty shell grains due to inability to fertilize, resulting in what farmers call flowering and fruiting.
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Absorption of nutrients by Rice at different growth stages
The absorption of nutrients in different growth stages of rice varies greatly with different types. The growth period of double cropping rice is short, especially the vegetative growth period in the field is shortened, and the vegetative growth and reproductive growth overlap shortly after transplanting. That is, panicle differentiation began at the same time of tillering in the field, and entered the peak tillering stage in the process of panicle differentiation, so a prominent fertilizer absorption peak was formed at 2-3 weeks after transplanting, and two fertilizer absorption peaks were formed for single-cropping rice at 2-3 weeks and 7-9 weeks after transplanting. The absorption rate of all kinds of nutrients by rice reached before heading.
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Application of Zinc Fertilizer to Rice to prevent "sitting"
Rice seedlings do not grow long after transplanting, or even do not turn green, or do not tiller or even shrink after turning green, which is generally called "sitting". Most of the "sitting" fields appear in low-lying shady and humid areas and cold rotten and thin fields, but sometimes fertile fields also occur. There are many reasons for this phenomenon, and zinc deficiency is one of the most important reasons. The symptoms of zinc deficiency in rice are as follows: the leaf tip of the basal leaf of rice plant is dry, irregular patches of yellowish brown or even reddish brown appear in the middle of the leaf, and gradually from the old leaf.
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