摘要
通过田间调查，初步探明了刻叶刺儿菜Ｃｅｐｈａｌａｎｏｐｌｏｓｅｔｏｓｕｍ（Ｗｉｌｌｄ．）Ｋｉｔａｍ．在青稞田不同发生密度对青稞产量的影响。结果表明：刻叶刺儿菜密度每ｍ￣２内１、２、３、４、５、６、７、８、９、１０株时，青稞减产依次为０．９％、７．０％、１１．１％、１１．１％、１４．３％、１７．４％、１８．１％、３０．８％、３０．３％、３２．８％。刻叶刺儿菜发生密度对青稞减产的回归方程为：Ｙ＝０．４４７－０．０１４９ｘ（ｒ＝－０．９７６）；青稞穗粒数减少方程为：Ｙ＝３９．０４９－１．２６２７ｘ（ｒ＝－０．９７０）；青稞千粒主降低方程为：Ｙ＝３９．２９９－０．３３０９ｘ（ｒ＝－０．９８５）。
Through field investigation ,it is rudimental verified that different density of the Cephalanoplos seto-sum(Willd. ) Kitam. gives different effecation on the yield of highland barley. The results show : whenthe density of Cephalanoplos setosum(Willd.) Kitam. is 1,2,3,4,5,6,7,8,9,10 spike/m￣2 respective-ly,the yield of highland barley reduced 0.9%,7.0%, 11.1%,11.1%, 14.3%,14%, 18.1%,30.8%, 30.3%, 32.8%respectively.Hence the regression equation for grain yield:Y=0.447-0.0149x(r=-0.976);the equation of per spike grains Y=39.049-1.2627x(r=-0.970);the e-quation of thousand dernel weight Y= 3.299-0.3309x(r=-0.985) have been made. The thresh-old and contral method also has been mensioned.
出处
《西北农业学报》
CSCD
1995年第3期46-48,共3页
Acta Agriculturae Boreali-occidentalis Sinica
关键词
刻叶利儿菜
青稞
产量损失
Cephalanoplos setosum(Willd.) Kitam
Highland barley
Loss of yield
