行距与播种量和施肥量对塔乌库姆冰草种子产量的影响  

Effect of row space,sowing rate and fertilizing amount on seed yield of Agropyron cristatum cv.Tawukumu

作　　者：梁维维[1] 刘梦[1] 李莉[1] 李亮[1] 麦丽亚 贾纳提[1] LIANG Wei-wei;LIU Meng;LI Li;MAI Li-ya;LI Liang;JIA Na-ti(Grass Industry Research Institute of Xinjiang Animal Science Academy,Urumqi,Xinjiang,830000)

机构地区：[1]新疆畜牧科学院草业研究所

出　　处：《草原与草坪》2019年第6期77-82,共6页Grassland and Turf

基　　金：新疆特色牧草种质资源创新实验室(XJLY 18HW031)资助

摘　　要：以塔乌库姆冰草为试验对象,采用三因子三水平正交试验,研究了行距,施肥量和播种量对其种子产量的影响。结果表明:对塔乌库姆冰草种子产量影响的主要因子是行距,其次是施肥量,播种量影响较小;当行距30 cm,施肥量225 kg/hm^2,播种量15 kg/hm^2时,种子产量最高,达675.6 kg/hm^2。对冰草种子产量贡献率进行大小排序为:小穗种子数>生殖枝数>小穗小花数>每生殖枝小穗数>千粒质量,通过优化栽培措施增加单位面积上生殖枝数、每生殖枝小穗数,可有效提高冰草种子产量。In this study,Agropyron cristatum cv.Tawukumu was used as test material and a orthogonal design was utilized with three factors(row space,sowing rate,fertilizing amount).The seed yield were determined and analyzed.The results show that the row space was the main factor affecting the seed yield of A.cristatum,the second factor was fertilizing amount,and the sowing rate only had less influence;There was highest seed yield of 710.43 kg/hm^2 with the row space of 30 cm,sowing rate of 15 kg/hm^2,and fertilizing amount of 225 kg/hm^2.The contribution rate of A.cristatum seed yield was ranked as follows:number of spikelets>number of reproductive branches>spikelets>spikelets per reproductive branch>1000-grain weight.The results showed that the seed yield of A.cristatum could be effectively increased by optimizing cultivation measures to increase the number of reproductive branches per unit area and spikelets per reproductive branch.

关 键 词：塔乌库姆冰草 行距 施肥量 播种量 种子产量 

分 类 号：S543.9[农业科学—作物学]