The lack of water from booting to heading has a significant effect on yield. During this period, the plants have strong photosynthetic activity and strong metabolism. This is the period when rice lacks more water in a lifetime. At this time, water shortage will reduce the light and ability, affect the development of young ears, and affect the development of stalks and spikelets. Degeneration and infertility, the root activity of rice plants decreased. In the early stage of booting, the stems were inhibited by drought. The differentiation of spikelet primordium, the number of grains per panicle, and the lack of water in the mid booting period resulted in the development of the inner and outer nymphs and pistils. The lack of meiosis caused a large number of degeneration of the spikelets, a reduction in the number of grains, and a decline in the seed setting rate. The lack of heading stage causes difficulty in heading and flowering, and not only the heading is uneven. Baotou has a lot of white and spikes. Decreasing the seed setting rate will directly result in no panicle extraction, which will seriously affect rice yield.
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