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[1]杨 军,黄淑娥,** 曹 娜 张崇华 王尚明.降温期灌水和叶面喷施磷酸二氢钾对早稻产量的影响*[J].应用与环境生物学报,2018,24(05):1-9.[doi:10.3724/SP.J.1145.2017.12016]
 YANG Jun,HUANG Shu-e**,CAO Na,et al.Effects of irrigation and spraying foliar potassium dihydrogen phosphate on early rice yield during the temperature drop period*[J].Chinese Journal of Applied & Environmental Biology,2018,24(05):1-9.[doi:10.3724/SP.J.1145.2017.12016]
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降温期灌水和叶面喷施磷酸二氢钾对早稻产量的影响*()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
24卷
期数:
2018年05期
页码:
1-9
栏目:
研究论文
出版日期:
2018-10-25

文章信息/Info

Title:
Effects of irrigation and spraying foliar potassium dihydrogen phosphate on early rice yield during the temperature drop period*
文章编号:
201712016
作者:
杨 军1 2 黄淑娥1 2** 曹 娜3 张崇华4 王尚明4
1江西省气象科学研究所 南昌 330096
2江西省农业气象中心 南昌 330096
3江西农业大学作物生理生态与遗传育种教育部重点实验室 南昌 330045
4江西省农业气象试验站 南昌 330200
Author(s):
YANG Jun12 HUANG Shu-e12** CAO Na3 ZhANG Chonghua4 & WANG Shangming4
1Jiangxi Institute of Meteorological Science, Nanchang 330096, China 2Agro-Meteorological Center of Jiangxi Province, Nanchang 330096, China 3Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Jiangxi Agricultural University, Nanchang 330045, China 4Agro-meteorological Experiment Station of Jiangxi Province, Nanchang 330200, China
关键词:
早稻降温灌水磷酸二氢钾产量
Keywords:
early rice temperature drop irrigation potassium dihydrogen phosphate yield
DOI:
10.3724/SP.J.1145.2017.12016
摘要:
为筛选灌水和叶面喷施磷酸二氢钾的最佳方案,防御降温对早稻的伤害,以杂交早稻‘淦鑫203’为材料进行分期播种,于2014—2015年气温下降期,开展灌水3~4 cm水层、8~10 cm水层、8~10 cm水层夜灌日排(分别记为T1、T2、T3)和叶面喷施0.1%、0.3%、0.5%浓度的磷酸二氢钾(KH2PO4)(分别记为T4、T5、T6)的试验处理,以稻田0~1 cm水层为对照,研究不同处理对早稻产量构成的影响. 结果表明:降温期灌水和叶面喷施KH2PO4有利于提高早稻的SPAD值、光合速率和产量. 分蘖期灌水提高有效穗数、穗粒数和结实率以增加产量,穗分化期灌水通过提高穗粒数和结实率增产,而穗分化期叶面喷施KH2PO4则提高穗粒数、结实率和千粒重以增产. 早稻灌水增产效果排序为:T3, T2>T1>CK,叶面喷施KH2PO4为:T5>T6>T4>CK. 本研究表明,降温期采取灌水(8~10 cm水层)和喷施0.3%浓度的KH2PO4技术措施可减少水稻的产量损失,有效防御降温伤害. (图2 表3 参31)
Abstract:
The optimal solutions of screening irrigation and spraying foliar potassium dihydrogen phosphate ( KH2PO4) can reduce the chilling injury of early rice. Hybrid early rice ‘Ganxin203’ was used to sow at five phases, the irrigations (irrigation water layer 3~4 cm, water layer 8~10 cm , and water layer 8~10 cm for night-irrigation and day-drainage, named T1, T2, T3) and spraying foliar fertilizers (spraying 1000 mg·kg-1 (7.35 mmol·L-1), 3000 mg·kg-1, 5000 mg·kg-1 KH2PO4, named T4, T5, and T6 respectively) were conducted during the temperature drop period in 2014 and 2015. The paddy field with 0~1 cm water layer was the control (CK), and the effects of different treatments on yield and its components of early rice were process ed in this work. The results showed that irrigation and spraying foliar KH2PO4 could improve chlorophyll content ( SPAD value), net photosynthetic rate, and yield of early rice during the temperature drop period. Irrigation at tillering stage increas ed effective panicles per plant, spikelets per panicle , spikelets fertility to increase the yield, and the irrigation at panicle differentiation stage was by increasing spikelets per panicle and spikelets fertility. Spraying foliar KH2PO4 increased spikelets per panicle, spikelets fertility , 1000-grain weight , and yield at panicle differentiation stage. The order of effects of irrigation in early rice was as follows: T3, T2> T1> CK, while T5> T6 > T4> CK for spraying foliar KH2PO4. It can be seen that the defensive measures (irrigation water layer 8~10 cm for night-irrigation and day-drainage, and foliar spraying 1000 mg·kg-1 KH 2PO4) can enhance the rice yield, and reduce the chilling injury during the temperature drop period.

备注/Memo

备注/Memo:
收稿日期: 2017-12-07 接受日期: 2018-01-30
*国家公益性行业(气象)科研专项(GYHY201406025)、中国气象局气候变化专项(CCSF201513)和江西省气象科技项目(JMTF20170221)资助?
**通讯作者(E-mail: 512675442@qq.com)
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更新日期/Last Update: 2018-02-12