通过田间试验，研究了河西绿洲灌区玉米分蘖去留对产量及其构成因素的影响。结果表明，保留分蘖的玉米籽粒、秸秆、株高、穗位、径粗、穗长、穗粗、穗粒数、百粒重和收获指数分别高于去除处理6.71%、5.09%、5.20%、7.45%、5.82%、3.01%、2.88%、4.89%、3.48%和2.04%，但差异均未达到显著水平。可见，在河西绿洲灌区进行先玉335玉米生产时，分蘖不会造成显著减产，不需要去除。

Effects of tiller removing or remaining on yield and yield components of corn cultivar Xianyu 335 were studied by field experiment in Hexi Oasis Irrigational Area. The results showed that corn grain yield， straw yield， plant height， ear height， stem diameter， spike length， spike thickness， grain number per spike， 100-grain weight and harvest index of tiller remaining treatments were higher than those under removal treatment， respectively 6.71%， 5.09%， 5.20%， 7.45%， 5.82%， 3.01%， 2.88%， 4.89%， 3.48% and 2.04%. However， the differences did not reach the significant level. It can be seen that tillering will not reduce production and does not need to be removed when Xianyu 335 corn is produced in Hexi Oasis Irrigation Area.

S513

国家重点研发计划(2018YFC1903700)。