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[1]杨军,黄淑娥,曹娜,等.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):1132-1138.[doi:10.19675/j.cnki.1006-687x.2017.12016]
 YANG Jun,HUANG Shue,et al.Effects of irrigation and spraying with foliar potassium dihydrogen phosphate on early rice yield during a seasonal cooling period[J].Chinese Journal of Applied & Environmental Biology,2018,24(05):1132-1138.[doi:10.19675/j.cnki.1006-687x.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:
1132-1138
栏目:
研究论文
出版日期:
2018-10-25

文章信息/Info

Title:
Effects of irrigation and spraying with foliar potassium dihydrogen phosphate on early rice yield during a seasonal cooling period
作者:
杨军黄淑娥曹娜张崇华王尚明
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 Jun1 2 HUANG Shu’e1 2** CAO Na3 ZHANG Chonghua4 & WANG Shangming4
1 Jiangxi Institute of Meteorological Science, Nanchang 330096, China 2 Agro-Meteorological Center of Jiangxi Province, Nanchang 330096, China 3 Ministry of Education Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Jiangxi Agricultural University, Nanchang 330045, China 4 Agro-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
分类号:
S511 : S365
DOI:
10.19675/j.cnki.1006-687x.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提高了早稻的叶绿素含量(SPAD值)、光合速率和产量. 分蘖期灌水提高了有效穗数、穗粒数和结实率进而增加产量,穗分化期灌水通过提高穗粒数和结实率而增产,而穗分化期叶面喷施KH2PO4则提高了穗粒数、结实率和千粒重进而增产. 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6%的产量损失,有效防御降温伤害. (图2 表3 参31)
Abstract:
The use of optimal levels of screening irrigation and spraying with foliar potassium dihydrogen phosphate (KH2PO4) can reduce chilling injuries to early rice. Hybrid early rice ‘Ganxin203’ was sown at five phases, and then irrigation was conducted by applying a 3-4 cm layer of water, a 8-10 cm layer, and a 8-10 cm with night irrigation and day drainage, in treatments termed T1, T2, and T3, respectively. Foliar fertilizers were also sprayed on plants at concentrations of 1 000 mg/kg (7.35 mmol/L), 3 000 mg/kg, and 5 000 mg/kg of KH2PO4, which were termed T4, T5, and T6, respectively. Irrigation and spraying treatments were conducted during the periods in which temperatures were dropping (seasonal cooling periods) in 2014 and 2015. A paddy field with a 0-1 cm water layer was used as the control (CK), and the effects of different treatments on the yield and components of early rice were quantified relative to the control in this study. Results showed that irrigation and spraying foliar KH2PO4 improved the chlorophyll content (SPAD value), net photosynthetic rate, and yield of early rice during the cooling period. Irrigation at the tillering stage increased the number of effective panicles per plant, number of spikelets per panicle, and the spikelets’ fertility (i.e. ability to increase yield), and irrigation at the panicle differentiation stage increased the number of spikelets per panicle and the spikelets’ fertility. Spraying foliar KH2PO4 increased the number of spikelets per panicle, spikelets’ fertility, 1 000-grain weight, and yield at the panicle differentiation stage. The strength of the effects of irrigation on early rice was greater for T3 and T2 than for T1, but all of these treatments had higher values than CK. For foliar spraying with KH2PO4, T5 had a greater effect than T6, which had greater effects than T4, and results in all treatments were greater than in CK. The optimal combination of defensive measures was irrigation with 8-10 cm of water at night with day drainage and foliar spraying with 1 000 mg/kg KH2PO4, which enhanced the rice yield by 6% and reduced the severity of chilling injuries during the seasonal cooling period.

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更新日期/Last Update: 2018-10-25