Cultivation method for flax hybridization by using male sterile of flax

The invention relates to a cultivating method to utilize flax male sterility to hybrid flax, belonging to the field of crop cultivation. Heterosis utilization is an effective way to improve the yield of flax, but the main obstacle in prior suitable heterosis utilization is the lack of excellent flax male sterile line. The invention is characterized in that, excellent temperature sensitive sterile line successfully selected and bred through antibiotic mutation is utilized for hybrid breeding and hybrid production; the cross combination with obvious yield heterosis is bred; the method to produce sterile line at high temperature area and produce hybrid F1 seed together with a restore line at low temperature area is invented. The cultivating method has the advantages of simple propagation, low production cost, wide sterile line restoring sources and obvious heterosis.