摘要
为了探讨分蘖期水分胁迫对水稻产量的影响机理,试验以寒地早熟水稻品种垦稻12为材料,通过盆栽方式人为控制土壤水分,研究了分蘖期水分胁迫对水稻农艺性状及产量的影响。结果表明:分蘖期控水,单株有效穗数、穗长、穗粒数、结实率、千粒重和单株产量均低于CK水平;水稻农艺性状与产量的相关性分析表明:正常灌水与水分胁迫两种环境条件下单株有效穗数、穗长和结实率与产量均呈极显著或显著正相关(r=0.745 6**,r=0.810 6**;r=0.595 2*,r=0.745 3**;r=0.689 8**,r=0.585 1*);正常灌水条件下影响产量的主要性状是有效穗数和结实率,水分胁迫条件下影响产量的主要性状是有效穗数和穗长。
In order to investigate the mechanism of water stress at tillering stage on rice yield, taking cold region rice variety cultivated rice Kendao 12 as material,through a pot of soil moisture artificially controlled manner, the effect of water stress at tillering stage on rice agronomic traits and yield was studied. The results showed that controlled water stress at tillering stage,panicle per plant, panicle length,spikelet per panicle,seed setting rate, 1 000-seed weight and yield per plant were lower than CK ; By correlation analysis on agronomic traits and yield of rice,normal irrigation and water stress conditions in both of environments panicle per plant and panicle length and seed setting rate and yield were highly significant or significant positive correlation （r=0. 745 6^＊＊ , r=0. 810 6^＊＊ r=0. 595 2^＊ ,r=0. 745 3^＊＊;r=0. 689 8^＊＊,r= 0. 585 1^＊）; Under normal irrigation conditions the main agronomic traits affected yield was the number of effective panicles and seed setting rate, under the conditions of water stress,the main agronomic traits affected yield was the number of effective panicles and panicle length.
出处
《黑龙江农业科学》
2015年第8期31-34,共4页
Heilongjiang Agricultural Sciences
基金
黑龙江省省长基金资助项目(2009HSJ-A-2)
哈尔滨市创新工程资助项目(2010RFQYN112)
关键词
寒地
水稻
分蘖期
水分胁迫
农艺性状
产量
cold region
rice
tillering stage
water stress
agronomic traits
yield
