论文部分内容阅读
水稻磷代谢的生理生化过程及其对生育的影响,国内外均有报导,特别是示踪的研究提供了一些有价值的资料,在水稻营养生理的专著中作了比较详尽的阐述。一般认为,磷在蛋白质合成,氧化磷酸化和促进矿质离子吸收过程中起重要的作用。水稻需磷的临界期约在种子发芽后7周以内,早期供磷对植株营养生长和生殖生长有积极的作用。水稻生育前期气温偏低时,改善植株磷素营养状况,能提高机体代谢水平和抗逆能力,促进分蘖早发,在低产的白土上施磷,可以防止早稻发生僵苗,增产效果明显。
Physiological and biochemical processes of phosphorus metabolism in rice and their effects on reproduction have been reported at home and abroad, especially tracer studies provide some valuable information in rice physiology and nutrition monograph made in more detail. It is generally believed that phosphorus plays an important role in protein synthesis, oxidative phosphorylation, and the promotion of mineral ion uptake. The critical period of phosphorus demand in rice is about 7 weeks after the seed germination, early phosphorus has a positive effect on vegetative growth and reproductive growth. When the temperature is low in the early growth stage of rice, phosphorus nutrition status of plant can be improved, which can improve the metabolism level and resilience of the plant, promote early tillering and apply phosphorus on low-yielding clay to prevent the emergence of stiff seedling in early rice and increase the yield obviously.