Abstract Effects of plant density,pruning way and pollination times on the yields and quality of
F1 hybrid seeds were studied by orthogonal experiment design of L9(34),so as to find the optimal
portfolio of tomato(Lycopersicon esculentum Mill.)hybrid seed production techniques under plastic
shed cultivation.The results showed that influencing degree of the three factors on the yields and
quality of tomato seeds were plant density>pollination times>pruning way,and the best combination
could be obtained by density of 3 340 plant per 667 m2,with double-stem pruning and three times
pollination.
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