Effects of different mechanical direct seeding methods on grain yield and lodging resistance of early indica rice in South China
Effects of different mechanical direct seeding methods on grain yield and lodging resistance of early indica rice in South China
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不同机械直播方式对华南早籼稻产量及抗倒伏能力的影响
DOI：
10.1016/s2095-3119(20)63191-4
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发表时间：
2021-05
影响因子：
4.8
通讯作者：
Zeng Yanhua
中科院分区：
文献类型：
--
作者：
Wang Wenxia;Du Jie;Zhou Yanzhi;Zeng Yongjun;Tan Xueming;Pan Xiaohua;Shi Qinghua;Wu Ziming;Zeng Yanhua
在中国南部，水稻直播因劳动力投入少、经济效益高而成为主要种植方式。旱直播已广泛应用于水稻单季栽培设施中。然而，很少有研究研究早稻在机械旱作直播下的表现。以中加早17号和珠两优819为材料，进行了为期两年的田间试验，研究了不同直播方式下水稻倒伏特性及产量形成规律。结果表明，DDS的年产量比WDS和FDS分别增产14.42~26.34%和6.64~24.58%，增产的主要原因是穗数的提高。DDS模式显著提高了早稻品种的出苗率，增加了总干重和作物生长速率。同时，与FDS和WDS相比，DDS的节间较短，茎粗和茎壁厚较好，倒伏指数较低。特别是，DDS提高了抗茎倒伏能力。结果表明，适宜的直播方式有利于提高早稻产量和抗倒伏性。
Direct seeding of rice has become a main planting method due to the low labor input and high economic benefit in South China. Dry direct seeding (DDS) has been widely used for single-season rice planting establishment. However, few studies have examined the performance of early-season indica rice under mechanical dry direct seeding. A two-year field experiment was conducted with two indica rice cultivars (i.e., Zhongjiazao 17 and Zhuliangyou 819) to study lodging characteristics and grain yield formation under DDS, flooded direct seeding (FDS) and wet direct seeding (WDS) patterns. The results showed that the annual grain yield in DDS was higher by 14.42-26.34% for cultivar ZLY819 and 6.64-24.58% for cultivar ZJZ17 than in WDS and FDS, respectively, and these increases were mainly attributed to the improvement of the panicles. The DDS pattern significantly increased the seedling emergence rate of early indica rice cultivars, and increased total dry weight and crop growth rate. Meanwhile, shorter basal internodes, better stem diameter and stem wall thickness and lower lodging index were found in DDS in contrast to FDS and WDS. In particular, DDS improved the stem lodging resistance. Our results suggested that the appropriate direct seeding method was beneficial for improving the grain yield and lodging resistance of early indica rice.
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DOI：
--
发表时间：
2014
期刊：
Transactions of the Chinese Society of Agricultural Engineering
影响因子：
--
作者：
Zhang Xirui;Gan Shengbao;Li Yue;Liang Dong;Zheng Kan
通讯作者：
Zhang Xirui;Gan Shengbao;Li Yue;Liang Dong;Zheng Kan
影响因子：
--
作者：
OOKAWA, T;ISHIHARA, K
通讯作者：
ISHIHARA, K
影响因子：
5.8
作者：
Zhang, Jun;Li, Ganghua;Ding, Yanfeng
通讯作者：
Ding, Yanfeng
影响因子：
--
作者：
T. Chosa;O. Matsumura;A. Ohsumi
通讯作者：
T. Chosa;O. Matsumura;A. Ohsumi
QTL的分子映射与干米（Oryza sativa L.）中的耐药性相关。
影响因子：
5.6
作者：
Yadav S;Singh UM;Naik SM;Venkateshwarlu C;Ramayya PJ;Raman KA;Sandhu N;Kumar A
通讯作者：
Kumar A