不同穴播粒数对花生生育及产量的影响  

Effect of Different Seed Numbers Per Hole on Development Characteristics and Yield of Peanut

作　　者：李朦朦[1] 王晓光[1] 蒋春姬[1] 李美[1] 孙智明[1] 王一博[1] 庄红帅 

机构地区：[1]沈阳农业大学农学院,沈阳110161 [2]抚顺市木奇镇农业技术推广站,辽宁抚顺113213

出　　处：《沈阳农业大学学报》2012年第2期216-220,0,共5页Journal of Shenyang Agricultural University

基　　金：国家农业科技成果转化基金项目(SQ2011ECB000020);辽宁省花生产业体系建设项目(辽财指企[2010]717号)

摘　　要：以花生品种花育28号为供试材料,在每公顷15万穴的条件下,设置3种不同穴播粒数处理:每穴1粒(T1)、单粒双粒交替种植(T2)、每穴2粒(T3),构建了3种不同密度群体,研究了不同穴播粒数对花生生长发育、光合特性、产量及产量构成因素的影响。结果表明:株高、第一对和第二对侧枝长随穴播粒数的增加而增加;T3的LAI前期上升快,峰值过后降速快,各生育时期LAI表现为T2>T3>T1;单位面积干物质积累量在各个时期均表现为T3>T2>T1;叶片叶绿素含量、净光合速率、蒸腾速率和胞间CO2浓度表现为T3<T2<T1;单株饱果数、百仁重、百果重、出仁率表现为T3<T2<T1,单粒双粒交替种植产量最高,为3848.8kg.km-2,而且节省种子,每公顷经济效益比每穴2粒常规播种高15.8%。In order to explore the optimum allocation type in field and seed quantities of peanut cultivar Huayu 28 in Liaoning Province,the experiment was carried out by setting three different seed numbers per hole treatments under planting density of 150000 hole per hectare to build three different populations ：single seed per hole（T1）,one seed two seeds alternately（T2）,two seeds per hole（T3）.Plant growth and development、photosynthetic characteristic,yield and yield components were analyzed.The results were described as follows：Plant height,the length of first and second lateral branch and dry matter accumulation increased with the increase of seed numbers per hole.LAI of T3 increased before the peek and declined more rapidly than T1 and T2 after the peak.With the increase of seed numbers per hole、chlorophyll content,net photosynthetic rate,transpiration rate,intercellular CO2 concentration as well as pods number per plant,100-kenels weight,100-pods weight,shelling percentage decreased.Two seeds per hole planting got the highest yield of 3848.8 kg·km-2,had more 15.8% benefits per hectare higher than that of two seeds per hole.

关 键 词：花生 穴粒数 生育 产量 

分 类 号：S565.2[农业科学—作物学]