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通过苗床和试区喷施１％的植物低温保护剂（ＰＬＴＰＡ），结果表明，ＰＬＴＰＡ有利于培育壮苗，增加油菜植株干物质积累，提高油菜越冬抗寒能力，促进油菜生长发育。与对照相比，可提高产量１３１％
1% PLTPA was sprayed on the seedbed and the test area. The results showed that PLTPA was beneficial to cultivate strong seedlings, increase the dry matter accumulation of rapeseed, increase winter cold resistance and promote the growth and development of rape. Compared with the control, can increase the yield 13 1%