30%已.乙水剂处理极显著缩短穗下部节间长度,降低了植株和果穗的重心,提高了子粒形成期和灌浆期穗下部节间单位长度干重,极显著提高穗下部节间折断时的最大载荷和径向的碾碎强度,增加了穗下各茎节的粗度,总体提高玉米茎的抗倒伏性能。同时,化控处理降低了空秆率和秃尖长,提高了行粒数和穗粒重,显著提高了产量,化控措施使玉米子粒产量与茎秆质量得到了协同改善。 30% of the total.The panicle treatment significantly reduced the internode length, reduced the center of gravity of plant and ear, increased the dry weight per unit length of panicles during grain formation and filling stage, and significantly increased the breakage of inferior ear internodes When the maximum load and the radial crushing strength, increase the thickness of each stem under the ear to improve the lodging resistance of corn stems. At the same time, the chemical control treatment reduced the empty stalk rate and bald length, increased the row grain number and the spike weight, and significantly increased the yield. The chemical control measures made the synergistic improvement of the corn grain yield and stalk quality.