DUAN Xiangkun,SONG Wei,ZHANG Donghai,et al.Effects of K Fertilizer Application on Potassium Absorption，Yield and Quality of Melon Under Facility Conditions[J].Northern Horticulture,2022,(13):61-69.[doi:10.11937/bfyy.20220175]
设施条件下施钾对厚皮甜瓜钾肥吸收、产量及其品质的影响
- Title:
- Effects of K Fertilizer Application on Potassium Absorption，Yield and Quality of Melon Under Facility Conditions
- Keywords:
- K fertilizer application; melon; dry matter; soluble solids; yield
- 文献标志码:
- A
- 摘要:
- 以厚皮甜瓜品种“耀珑25号”为试验材料，采用单因素随机区组试验，研究了不同施钾量对设施条件下甜瓜各器官鲜干质量积累、钾素吸收积累、品质及其产量的影响，以期为设施条件下合理施用钾肥提供参考依据。结果表明：合理施钾能够促进厚皮甜瓜整株及其各器官对钾素的吸收积累、干物质的积累和植株的生长发育，提升果实的营养品质，提高厚皮甜瓜的产量，而施肥过量则会不利于其营养吸收、干物质积累和植株的生长发育。当施钾量为165 kg?hm-2时，厚皮甜瓜成熟期整株钾素的积累达到最大值，与对照相比显著增加428.81%；而当施钾量为135 kg?hm-2时其成熟期整株干物质积累量、平均可溶性固形物含量表现最佳，分别较对照增加22.68%、21.51%和33.62%。且在该施钾水平下，厚皮甜瓜产量达4 001.73 kg，与对照相比显著提高42.94%。结合厚皮甜瓜在生长发育过程中不同时期干物质的变化、钾素吸收、积累以及成熟期果实性状和产量的情况，经过综合比较，在该试验同等肥力和栽培环境的条件下，建议钾肥施用量为135 kg?hm-2左右为宜。
- Abstract:
- The melon variety ‘Yaolong 25’ was used as experimental material,six potassium fertilizer levels were designed by single factor randomized block experiment,the effects of different potassium application rates on K absorption and accumulation quality and yield of melon were studied,in order to provide reference for reasonable application of potassium fertilizer under facility conditions.The results showed that reasonable application of K could promote the absorption and accumulation of K by the whole plant and its organs，the accumulation of dry matter and the growth and development of the plant，improve the nutritional quality of fruit and increase the yield of the melon，while excessive application of K was not conducive to the accumulation of dry matter and the growth and development of the plant.When the potassium application rate was 165 kg?hm-2，the accumulation of potassium in the whole plant reached the maximum at maturity，which was significantly increased by 428.81% compared with the control.At 135 kg?hm-2，the average soluble solids content of the whole plant was the best，which increased by 22.68%,21.51% and 33.62%，respectively，compared with the control.Under this potassium application level，the yield of melon reached 4 001.73 kg，significantly increased by 42.94% compared with the control.According to the changes of dry matter in different periods during the growth and development of melon，potassium absorption and accumulation，fruit characters and yield at mature stage，the optimal potassium application rate of 135 kg?hm-2 was suggested under the same fertility and cultivation environment in this experiment.
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备注/Memo
第一作者简介：段祥坤（1986-），男，硕士，助理研究员，现主要从事西甜瓜新品种选育及栽培技术等研究工作。E-mail:511299594@qq.com.责任作者：王志鹏（1984-），男，本科，副研究员，现主要从事西甜瓜新品种选育及栽培技术等研究工作。E-mail:673832383@qq.com.基金项目：新疆生产建设兵团科技创新人才计划资助项目(2020CB009,2022CB009)；新疆生产建设兵团重点领域科技攻关计划资助项目(2022AB015)；新疆生产建设兵团第六师科技计划资助项目(2209)；新疆生产建设兵团第三师科技计划资助项目(KJ2022CG02)。收稿日期：2022-01-14