种植密度对大垄双行膜下滴灌玉米生长和产量的影响  

Effects of Planting Density on Growth and Yield of Maize in Double Line at One Width Ridge under Mulch-drip Irrigation

作　　者：窦超银[1] 孟维忠[1] 

机构地区：[1]辽宁省水利水电科学研究院,沈阳110003

出　　处：《灌溉排水学报》2014年第6期97-100,共4页Journal of Irrigation and Drainage

基　　金：水利部科技推广项目(TG1203);水利部公益性行业科研专项资助项目(201101061)

摘　　要：为了确定大垄双行膜下滴灌种植模式下玉米的合理种植密度,研究了不同种植密度对玉米生长、产量和水分利用效率(WUE)的影响。结果表明,大垄双行膜下滴灌种植较传统雨养种植增产显著,玉米株高、茎粗、单株叶面积和单株地上干物质量随种植密度的增加而减小,LAI随着种植密度的增加而增大,成熟期后群体地上干物质量也随种植密度增加而增大;穗长、穗粗、穗粒数和穗粒质量等产量构成受种植密度影响不显著;产量和WUE随着种植密度的增大而增加,但增幅逐渐减小。大垄双行膜下滴灌玉米种植密度以6.67万株/hm2为宜。In order to determine the rational planting density of maize in double line at one width ridge un- der mulch-drip irrigation, the effects of planting density on growth, yield and water use efficiency（WUE） were studied under different planting densities. The results showed that maize yield in double line at one width ridge under mulch-drip irrigation increased significantly compared to rain-fed condition; Stem length and diameter, leaf area and dry matter of a single maize in double line at one width ridge under mulch-drip irrigation decreased with the increase of planting density while LAI increased as planting density increased; Population dry matter, however, increased with planting density after mature period; ear length, ear coarse, kernels per spike, spike grain weight and etc, such yield structure indexes changed in non-signifi- cantly as planting density varied; though yield and WUE increased with planting density increasing, their increments decreased gradually. Therefore, considering the increasing cost, planting density of 6.67 × 104 plants/hm2 is recommended in double line at one width ridge with under mulch-drip irrigation.

关 键 词：产量 大垄双行 膜下滴灌 水分利用效率 种植密度 

分 类 号：S513[农业科学—作物学]