Rice production in China has more than tripled in the past five decades mainly due to increased grain yield rather than increased planting area. This increase has come from the development of high-yielding varieties and improved crop management practices such as nitrogen fertilization and irrigation. However. yield stagnation of rice has been observed in the past ten years in China. https://www.bekindtopets.com/mega-grab-Freetress-Crochet-Braid-DEEP-TWIST-14-Inch-save-more/