洞庭湖区耕作方式与品种对冬播亚麻抗倒伏性和产量的影响研究

为了探讨不同亚麻品种在南方的生态适应性，提高亚麻产量、品质和经济效益，笔者对7个亚麻及2种耕作方式的原茎产量、种子产量、倒伏率等8个相关性状进行相关性分析、聚类分析。结果表明：免耕处理较旋耕处理原茎增产9.45%、种子增产0.37%；‘晋亚10号’产量综合排名第一，原茎产量为5285.98 kg/hm²，种子产量为402.7 kg/hm²，‘轮选2号’产量综合排名第二，原茎产量和种子产量依次分别为：5225.95 kg/hm²和375.19 kg/hm²，其中抗倒伏能力较强的品种有‘晋亚10号’和‘轮选2号’，5级倒伏率为0。由此可见，洞庭湖区可选用抗倒性较强的品种‘晋亚10号’和‘轮选2号’，并可采用免耕措施，可降低生产成本和提高经济效益。

Effect of Tillage and Varieties of Lodging Resistance and High Yield of Winter Flax in Paddyfield of Dongting Lake

To explore the ecological adaptability of different varieties of flax in the southern, improve flax production, quality and economic benefit, This study did relevance analysis and cluster analysis on original stem yield, seed yield, lodging rate and about eight related properties of seven flax and two farming methods.The results showed that the original stem yield of no-till treatment compared to rotary tillage increased by 9.45% and seed production by 0.37%, the yield of 'jin ya 10' was highest, the original stem yield up 5285.98 kg/hm2 and seed yield reached 402.7 kg/hm2, 'lun xuan 2' production ranked the second, the original stem yield and seed yield were 5225.95 kg/hm2 and 375.19 kg/hm2, 'Jin ya 10' and 'Lun xuan 2'has a strong ability of lodging resistance, 5 level of lodging rate was 0. Thus, Dongting Lake can choose the resistant variety was stronger 'Jin ya 10' and 'Lun xuan 2' , and the use of no tillage measures can reduce the production cost and improve the economic benefit.Key words: rotary tillage; no tillage; flax; original stem; seed yield