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以超强抗寒性冬油菜品种陇油6号、陇油7号和弱抗寒性品种天油2号、天油4号为材料,研究了低温(-5℃)胁迫下几种抗寒复合剂对白菜型冬油菜叶片相对电导率、丙二醛含量及越冬率、农艺性状、生育期、经济系数、产量变化的影响。试验设6种处理:T1,蒸馏水(CK);T2,20 mg·L~(-1)ABA;T3,20 mg·L~(-1)ABA+300 mg·L~(-1)PEG-6000;T4,20 mg·L~(-1)ABA+50 mg·L~(-1)PP333;T5,20 mg·L~(-1)ABA+300 mg·L~(-1)PEG-6000+50 mg·L~(-1)PP333;T6,20 mg·L~(-1)ABA+300 mg·L~(-1)PEG-6000+50 mg·L~(-1)PP333+10 g·L-1尿素。结果表明,喷施抗寒复合剂能显著提高白菜型冬油菜的越冬率,其中T5处理越冬率达到91.97%,较CK增加18.87%;抗寒复合剂处理,参试材料叶片相对电导率和丙二醛含量在各个处理下较CK平均降低25.43%和25.36%,并且使根颈直径、全株有效结角数、单株产量、经济系数、产量显著增加,生育期延长。通过隶属函数法和主成分打分,不同抗寒复合剂的抗寒效果为T5>T6>T4>T3>T2>CK。
Cold-resistant winter rape varieties Longyou 6, Longyou 7 and weak-hardy varieties Tianyou 2 and Tianyou 4 were used to study the effects of low temperature (-5 ℃) Effects of Complexing Agents on Relative Electric Conductivity, MDA Content, Overwintering Rate, Agronomic Traits, Growth Period, Economic Coefficients and Yield of Chinese Cabbage Winter Ravioli. Six treatments including T1, distilled water (CK), T2,20 mg · L -1 ABA, T3,20 mg · L -1 ABA +300 mg · L -1 PEG- 6000; T4, 20 mg · L -1 ABA + 50 mg · L -1 PP333; T5, 20 mg · L -1 ABA + 300 mg · L -1 PEG- 6000 + 50 mg · L -1 PP333; T6, 20 mg · L -1 ABA + 300 mg · L -1 PEG-6000 + 50 mg · L -1 PP333 + 10 g · L-1 urea. The results showed that spraying cold-resistant compound could significantly increase the overwintering rate of cabbage-type winter rape, in which the overwintering rate of T5 treatment was 91.97%, increased by 18.87% compared with CK; the relative conductivity of the tested material leaves and C The content of dialdehyde decreased by 25.43% and 25.36% on average compared with CK under each treatment, and the diameter of root neck, the effective number of knots of whole plant, the yield per plant, the economic coefficient and yield were significantly increased and the growth period was prolonged. Through the membership function method and the score of the main components, the anti-cold effect of different anti-cold composites is T5> T6> T4> T3> T2> CK.