CAJ | 학술논문

对玉米品种＂郑单958＂不同种植密度试验结果表明：＂郑单958＂种植密度在90 000株/hm2时,产量最高,此时玉米的株高、穗位、穗长、穗粗、穗粒数、百粒重、抗逆性等方面都比较适宜,有较高的增产潜力。低于或超过这一密度,产量均有所下降,密度较低时,玉米果穗大、单穗粒重较高,但穗数偏少,产量达不到最高值;密度较大时,果穗变小,秃尖较长,空秆增加,抗逆性下降,单穗粒重下降,产量也不能达到最大值。
대옥미품충＂정단958＂불동충식밀도시험결과표명：＂정단958＂충식밀도재90 000주/hm2시,산량최고,차시옥미적주고、수위、수장、수조、수립수、백립중、항역성등방면도비교괄의,유교고적증산잠력。저우혹초과저일밀도,산량균유소하강,밀도교저시,옥미과수대、단수립중교고,단수수편소,산량체불도최고치;밀도교대시,과수변소,독첨교장,공간증가,항역성하강,단수립중하강,산량야불능체도최대치。
An experiment on different planting densities of corn variety ＂Zhengdan 958＂ was carried out. The results showed that a highest yield was achieved when the planting density was at 90,000 plants/hm2 meanwhile the plant height, ear position, ear length, ear diameter, the grain number per spike, hundred grain weight and stress resistance were all relatively suitable and the potentiality of yield increasing was high. The yields would decrease when the planting densities were lower or higher than that density. When the planting densities were lower, the ear of corn was larger and single ear grain weight was higher but the number of ear was lesser and the yield could not reach the highest. When the planting densities were higher, the ear became smaller, bald tip was relatively longer, empty straw increased, stress resistance decreased and single ear grain weight decreased and the yield could not reach the highest.