LI Mei-mei,ZHAO Jian-jian,SONG Xin-ying,et al.Effect of Cutting off Frozen Branch on Physiological Metabolisn of ‘Lyuling’ Walnut After Frost[J].Northern Horticulture,2015,39(01):12-16.[doi:10.11937/bfyy.201501004]
‘绿岭’核桃霜冻后剪除冻梢的生理效应研究
- Title:
- Effect of Cutting off Frozen Branch on Physiological Metabolisn of ‘Lyuling’ Walnut After Frost
- 文献标志码:
- A
- 摘要:
- 摘 要：以10年生早实核桃‘绿岭’为试材，研究了剪除受冻梢与不剪除冻梢之间的生理效应差异，以减轻霜冻对核桃树造成的伤害。结果表明：4月20日修剪、5月6日修剪、对照的萌芽率分别为69. 05%、61. 20%、56. 32%，2个修剪处理的显著高于对照，4月20日修剪处理的极显著高于5月6日修剪处理的；坐果率分别为79. 66%、71. 55%、63. 31%，4月20日修剪处理的显著高于对照；日平均液流速率分别为4. 73、4. 02、2. 52 cm/h，4月20日修剪处理的日平均液流速率最大；净光合速率分别为7. 77、7. 39、5. 41 μmol?m-2?s-1，4月20日修剪处理的最大；叶绿素a含量分别为1. 83、1. 76、1. 65 mg/g，叶绿素(a+b)含量分别为2. 56、2. 49、2. 30 mg/g；叶片全氮含量分别为2. 4005%、2. 2512%、2. 0533%，全钾含量分别为1. 6516%、1. 4115%、1. 3076%，均以4月20日修剪处理的最高；根系活力分别为196. 04、184. 76、162. 89 μg?g-1?h-1；单果重分别为12. 21、11. 57、10. 53 g，每株树的产量分别为3. 67、2. 99、2. 03 kg；脂肪含量分别为65. 49%、65. 32%、63. 71%，总蛋白质含量分别为20. 60%、20. 11%、19. 72%，可溶性蛋白质含量分别为2. 26%、2. 23%、2. 17%，三者均以4月20日修剪处理的最高。
- Abstract:
- Abstract:Taking 10-year-old walnut trees of ‘Lyuling’ as materials,physiological metabolisn of cutting off frozen branch and no cutting off frozen branch in 2013 were studied,in order to reduce frost damage of walnut trees.The results showed that,the budding rates of pruning on April 20 th and pruning on May 6th and CK were 69.05%,61.20% and 56.32% respectively，and that of two pruning treatments were significantly higher than the control,and that of pruning on April 20th was very significantly higher than pruning on May 6th；the fruit rates of these three treatments were 79.66%,71.55% and 63.31% respectively,and that of pruning on April 20th was very significantly higher than the control；the average whole day sap flow velocities of these three treatments were 4.73 cm/h,4.02 cm/h and 2.52 cm/h，respectively,and that of pruning on April 20th was the biggest；net photosynthetic rates of these three treatments were 7.77 μmol?m-2?s-1,7.39 μmol?m-2?s-1,5.41 μmol?m-2?s-1,respectively,and that of pruning on April 20th was the biggest；chlorophyll a content of these three treatments were 1.83 mg/g,1.76 mg/g and 1.65 mg/g,respectively,the chlorophyll (a+b) content of these three treatments were 2.56 mg/g,2.49 mg/g and 2.30 mg/g；the leaf total nitrogen content of these three treatments was 2.4005%,2.2512% and 2.0533% respectively,the total potassium content of these three treatments was 1.6516%,1.4115% and 1.3076%,respectively,and both the total nitrogen content and potassium content of pruning on April 20th were the biggest；the root activities of these three treatments were 196.04 μg?g-1?h-1，184.76 μg?g-1?h-1 and 162.89 μg?g-1?h-1；the single fruit weight of these three treatments was 12.21 g,11.57 g and 10.53 g,respectively,and the yield per plant of these three treatments was 3.67 kg,2.99 kg and 2.03 kg；the oil content of these three treatments was 65.49%,65.32% and 63.71%,and the total protein content of these three treatments was 20.60%,20.11% and 19.72%，respectively,and the soluble protein content of these three treatments was 2.26%,2.23% and 2.17%,respectively,and all of pruning on April 20th was the biggest.
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备注/Memo
第一作者简介：李美美（1987-），女，河北保定人，硕士研究生，研究方向为经济林栽培生理。E-mail:824326077@qq. com.