Effect of Water on Growth and Development of Rice
The tillering stage of the tillering stage is a time when rice is sensitive to water. The soil moisture is highly saturated to the shallow water layer, which is favorable to early tiller, the water layer is too deep, and the tillering is gradually suppressed; otherwise, the soil moisture is reduced to 70% of the field water capacity. In the following, the delivery of rice began to be affected. Panicle differentiation to heading stage Rice panicle differentiation begins to heading, which is the most physiological physiological water requirement in rice, especially in pollen mother cells during the subdivision and tillering period. When the soil water holding capacity is 50%, it will affect the normal physiological activities of rice. If water shortage occurs at the early stage of ear differentiation, the differentiation of shoot stalk and spikelet primordium will be inhibited, and the number of spikelets will be significantly reduced. The lack of water and drought during the mid-ear spikelet differentiation will lead to poor development of the inner and outer nymphs, stamens and stamens. The pollen mother cells decrease the number of water and drought during the tillering period, which will seriously affect the development of organs, increase the number of infertility and degeneration of spikelets, and will seriously affect the yield. Heading and flowering period The heading and flowering stage is the most sensitive period of physiological water demand of rice. The requirement for water is second only to the jointing and heading stage. Water shortage during this period makes it easy for pollen and pistil stigma to be wilted by drought or heading difficulties. Flowering pollination, the formation of empty particles, and can easily cause root and leaf premature aging. Water status during grain filling is closely related to seed setting rate, grain plumpness, and rice quality. In general, interstitial irrigation should be adopted to keep the soil dry and wet, which will help improve the vitality of roots, promote the photosynthesis of leaves, smooth transport of grouting materials, and reduce disease. Shanghai J.Shine Co.,Ltd , https://www.jshinechem.com