孕穗-抽穗期高温下有机肥配合氮肥调控对糯稻产量和品质的影响
Effect of organic fertilizer combined with nitrogen fertilizer regulation on yield and quality of glutinous rice during the booting-heading stage under high temperature
王保君 1程旺大 1沈亚强 1陈贵 2张红梅1
作者信息
- 1. 嘉兴市农业科学研究院 生态环境研究所,浙江 嘉兴 314016
- 2. 嘉兴市农业科学研究院 生物技术研究所,浙江 嘉兴 314016
- 折叠
摘要
为了明确孕穗-抽穗期高温下有机肥配合氮肥调控对糯稻产量和品质的影响,通过随机区组试验,设置有机肥配合常规氮肥运筹(基肥 ∶ 分蘖肥 ∶ 穗肥=4 ∶ 3 ∶ 3,CK)、有机肥配合蘖肥前移(基肥 ∶ 分蘖肥 ∶穗肥=5 ∶ 2 ∶ 3,T-CK)、有机肥配合穗肥前移(基肥 ∶ 分蘖肥 ∶ 穗肥=5 ∶ 3 ∶ 2,P-CK)3 个处理,结合 2022 年浙江省极端高温天气情况(糯稻抽穗前 15 d中最高气温达到 35℃以上的天数有 13 d,最高气温连续超 35℃的天数为 12 d,危害热积温为 36℃,热害强度等级为重度),研究孕穗-抽穗期高温下有机肥配合氮肥调控对糯稻产量和品质的影响.研究表明:糯稻的热害损失率同糯稻的结实率呈显著负相关.同 CK 相比,T-CK 的穗粒数显著增加了 88.0%,直链淀粉含量显著降低了 50%;P-CK籽粒蛋白质含量显著降低了 2.10%.在热害损失率方面,P-CK的热害损失率最低.综上所述,有机肥配合穗肥前移(基肥 ∶ 分蘖肥 ∶ 穗肥= 5 ∶ 3 ∶ 2)可以缓解糯稻孕穗-抽穗期高温热害胁迫.
Abstract
In order to clarify the effects of organic fertilizer combined with nitrogen fertilizer regulation on the yield and quality of glutinous rice during the booting-heading stage under high temperature,a randomized block experiment was conducted.Three treatments were set:organic fertilizer combined with conventional nitrogen fertilizer management(base fertilizer ∶ tillering fertilizer ∶ heading fertilizer= 4 ∶ 3 ∶ 3,CK),organic fertilizer combined with early tillering fertilizer(base fertilizer ∶ tillering fertilizer ∶ heading fertilizer = 5 ∶ 2 ∶ 3,T-CK),and organic fertilizer combined with early heading fertilizer(base fertilizer ∶ tillering fertilizer ∶ heading fertilizer = 5 ∶ 3 ∶ 2,P-CK).The study also took into account the extreme high temperature weather conditions in Zhejiang Province in 2022(with 13 days of highest temperature above 35℃and 12 consecutive days of temperature exceeding 35℃,with a heat damage degree of 36℃and a severity level of severe).The aim was to investigate the effects of organic fertilizer combined with nitrogen fertilizer regulation on the yield and quality of glutinous rice during the booting-heading stage under high temperature.This study indicates that the heat damage loss rate of glutinous rice is significantly negatively correlated with the grain setting rate of glutinous rice.Compared with CK,T-CK significantly increased the number of grains per spike by 8.80%,and significantly reduced the content of amylose by 50%;The protein content in P-CK grains significantly decreased by 2.10%.In terms of heat damage loss rate,P-CK has the lowest heat damage loss rate.In summary,the combination of organic fertilizer and panicle fertilizer(base fertilizer ∶ tillering fertilizer ∶ heading fertilizer= 5 ∶ 3 ∶ 2)can alleviate high temperature and heat stress during the the booting-heading period of glutinous rice.
关键词
糯稻/氮肥/高温热害/品质Key words
glutinous rice/nitrogen fertilizer/high temperature heat damage/quality引用本文复制引用
基金项目
浙江省"三农九方"科技协作项目(2022SNJF006)
浙江省水稻新品种选育科技重大专项(2021C02063-3)
浙江省自然科学基金(LTGN23D010001)
嘉兴市科技计划(2021AZ10014)
嘉兴市科技计划(2023AZ11004)
出版年
2024
NETL
NSTL
维普
万方数据