摘要
采用分期取样、整株解析的方法,连续两年研究了巨峰葡萄不同生育时期对氮磷钾养分的需求规律,同时对第一年得出的需肥规律进行验证。结果表明:通过第二年的数据验证,基本确定巨峰葡萄的氮磷钾需求规律的正确性。巨峰葡萄每生产1000 kg果实氮磷钾的养分需求量约为N 3.87 kg、P2O5 1.95 kg、K2O 3.07 kg,比例为10∶5.04∶7.92。巨峰葡萄不同生育时期对氮磷钾的需求差异很大,其中新梢旺长期和坐果期吸氮量最大,磷素吸收关键期是转色期至落叶期,而吸收钾素的关键时期则是果实坐果期与膨大期。葡萄坐果前可以补充氮肥,同时配施少量磷钾肥;坐果后和膨大期是养分需求的关键时期,应该保证充足的氮肥,同时大量补施钾肥;果实成熟后到落叶期对各元素需求量较大,此期需施足肥料,为树体越冬和营养贮备提供保障。
The law of nutrient absorption and accumulation＆amp;nbsp;in whole growing season for Kyoho grapevine was concluded by the way of analyzing the whole plant for two years. The results showed that, for producing 1000 kg fruit, the amounts of N, P2O5, and K2O were required 3.87, 1.95 and 3.07 kg respectively. It was different that the absorption and distribution of nitrogen, phosphorus and potassium in Kyoho grapevine at different growing stages. The vine accumulated the most amount of N in the stages of fast growing and fruiting, the most amount of P2O5 from coloring to the leaves falling, the most amount of K2O in the stages of fruiting and swelling. it＇s better to apply little N, P2O5, K2O before the stages of blossom. After fruiting, the more N, P2O5, K2O to meet the vine＇s needs. Another key period was from fruiting to the leaf falling, that period had the more nutrient were absorbed to protect itself to wintering and storage.
出处
《中外葡萄与葡萄酒》
2014年第3期8-13,共6页
Sino-Overseas Grapevine & Wine
基金
国家现代农业产业技术体系建设专项资金(CARS-30)
山东省教育厅高校科研发展计划项目(J10LC18)
关键词
巨峰
氮磷钾
吸收
分配
Kyoho
nitrogen
phosphorus
potassium
absorption
distribution
