%0 Journal Article
%T 直播水稻产量、产量构成因子和干物质积累的变化特点及其相互关系<br>Changes and relationships of yield,yield components and dry matter accumulation of direct seeded rice
%A 孔飞扬
%A 江立庚
%A 文娟
%A 郝向阳
%J 华中农业大学学报
%D 2018
%X 利用中国期刊全文数据库检索直播水稻研究文献，采用从文献中获取的数据分析直播水稻产量、产量构成因子与干物质积累的变化特点及相互关系。结果显示：不同栽培条件下，直播水稻产量、产量构成因子、干物质积累量均表现出明显的波动性；在4个产量构成因子中，有效穗数的波动性大于产量，但与产量的相关不显著；每穗粒数的波动性不仅大于产量，而且与产量呈显著相关；结实率和千粒重的波动小于产量，与产量相关不显著；直播水稻在不同生育阶段的干物质积累量呈现出倒V形特点，不同生育阶段干物质积累量的波动呈现出明显的V形特点，即生育前期的干物质积累量最小，波动性却最大；生育中期的干物质积累量最大，波动性却最小；生育后期的干物质积累数量及波动性均介于前期与中期之间。前期和中期干物质积累量与产量的关系不显著，但后期与产量的相关达到显著水平。不同栽培条件下，直播水稻产量水平主要受每穗粒数和生育后期干物质积累量的调控。<br>The Chinese Journal Full text Database System was used to retrieve the research literature of direct seeded rice and the data obtained from the literature were used to analyze the changes and relationships of the yield,yield components and dry matter accumulation of direct seeded rice.Under different cultivation conditions, the yield, yield components and dry matter accumulation of direct seeded rice all showed obvious fluctuations.In the four yield components, the number of effective panicles was greater than the yield,but the correlation with yield was not significant; the number of grains per panicle was not only greater than the yield,but also significantly correlated with the yield; the fluctuation of the seed setting rate and the 1 000 grain weight was less than yield,not significantly related to yield.The dry matter accumulation of direct seeded rice at different growth stages showed an inverted V shape,and the fluctuation of dry matter accumulation at different growth stages showed a distinct inverted V shaped feature. That is,the accumulation of dry matter in the early growth period is the smallest and the volatility is the largest; the accumulation of dry matter in the middle growth period is the largest and the volatility is the smallest; the accumulation amount and the fluctuation of the dry matter in the late growth period are between the early and middle periods. The relationship between the accumulation of dry matter and the yield in the early and middle stages was not significant,but the correlation between the late stage and the yield reached a significant level. Under different cultivation conditions,the level of direct seeded rice production was mainly regulated by the number of grains per panicle and dry matter accumulation at the late growth stage.
%K 直播水稻 产量构成 干物质积累 相关性分析&lt
%K br&gt
%K direct seeded rice yield components dry matter accumulation correlation analysis
%U http://hnxbl.cnjournals.net/hznydxzr/ch/reader/view_abstract.aspx?file_no=20180502&flag=1