密植是农业“八字宪法”中的重要内容。合理密植是水稻增产的重要措施之一。水稻合理密植是符合增产的客观规律的。因为水稻单位面积产量的高低,是由穗数、每穗粒数和粒重所组成,当前水稻大面积生产的品种中,矮秆良种均属于穗数型品种。穗数多少是决定产量高低的主要方面。大量的水稻高产经验总结和试验表明,单产达到八百斤以上, Close planting is an important part of the “eight-character constitution” of agriculture. Reasonable and close planting is one of the important measures to increase yield of rice. Reasonable close planting of rice is in line with the objective law of increasing production. Because the level of rice yield per unit area, is the number of spikes per panicle and grain weight composition, the current large-scale production of rice varieties, dwarf varieties are spike varieties. The number of spikes determines the level of production of the main aspects. A large number of high-yield rice experience summaries and tests show that yields of more than eight pounds,