现在世界上十分重视用激光和化学方法刺激种子从而改善植物质量与产量的办法。 资料证明,用氦氖激光照射小麦、黄瓜、西红柿、西瓜和甜瓜的种子后,发芽率平均提高15％～20％,产量也上升。比如对麦种照射1～2次后,产量增20％～26％,照3次则可增产45％。西红柿种子经过这种方法处理后,产量增加25％,抗坏血酸含量增加。 也可用各种化学调节剂提高农作物的产量,植物荷尔蒙就是其中一种。种植业还广泛应用合成的植物荷尔蒙以及可以使植物按人类需求的生长的阻滞剂。现在种植业已离不开调节作物生长发育的刺激剂和阻滞剂。可是, Now the world attaches great importance to the use of laser and chemical methods to stimulate the seed to improve plant quality and yield approach. Data show that, with He-Ne laser irradiation of wheat, cucumber, tomato, watermelon and melon seeds, germination rate increased by 15% to 20%, the yield also increased. For example, after wheat is irradiated for 1 or 2 times, the yield will increase by 20% ~ 26% and the yield by 45% according to 3 times. After the tomato seeds are treated in this way, the yield increases 25% and the ascorbic acid content increases. Plant hormones are also one of a variety of chemical regulators that can be used to increase crop yields. Crop plants also make extensive use of synthetic plant hormones and blockers that allow plants to grow on human needs. Planting is now inseparable from stimulants and blockers that regulate crop growth and development. but,