小麦穗期单独喷施少量尿素或磷酸二氢钾等矿物肥料能提高经济产量,但是辅以植物生长调节剂、特别是光合作用的生长刺激剂和光呼吸的抑剂混合施用时,是相互抵消还是彼此促进呢?为了弄清这些问题,三年来曾先后在绵阳11号、芒粒多和绵阳19号的孕穗和齐穗期进行了(三重复或四重复)喷 Spraying a small amount of mineral fertilizers such as urea or potassium dihydrogen phosphate alone at the heading stage of wheat can increase the economic yield, but when applied in combination with plant growth regulators, especially photosynthetic growth stimulants and respiration inhibitors, offset each other or To promote each other? In order to clarify these problems, three years have been in Mianyang 11, mangosteen and Mianyang 19 booting and heading stage (triple or quadruple) spray