Study on the Productivity of Compact Maize under the Standard Row Spacing Condition
Zhao Wen-yuan · Journal of Hebei Agricultural Sciences · 2012
Using 19 compact maize new varieties as test materials,the agronomic traits and yield performance of maize under the two treatments of conventional(medium)fertility 60 000 plants/hm2 of density and high fertility 75 000 plants/hm2 of density were researched under the 0.6 m of standard row spacing condition.The results showed that under the medium fertility 60 000 plants/hm2 of density,19 maize varieties average ear length was 18.3 cm,kernels per ear was 532 grains,100-kernel weight was 35.5 g,yield was 10 884 kg/hm2,respectively,higher than the maize under the high fertility 75 000 plants/hm2 of density by 15.8%,16.9%,4.4%,2.4%.Under the 0.6 m of standard row spacing,60 000 plants/hm2 was the suitable cultivation density of compact planting maize,conventional fertilization could meet the required nutrients of maize production,and the maize productivity has been fully expressed,continue to increase fertilizer and planting density had no practical significance to improve the yield of maize.