CAJ | 학술논문

在田间种植条件下，于甘蔗收获期，测定分析了5个不同基因型甘蔗地上部各部位的干重和氮、磷、钾含量。结果表明，在参试的5个基因型甘蔗中，粤糖60号(YT60)和斑茅杂交后代(BC2-32)的叶片干重显著高于其他3个基因型甘蔗，YT60叶鞘和茎干重均最高。5个基因型甘蔗不同部位叶片、叶鞘和茎干重平均值来看，新叶片＞上、中部叶片＞下部叶片，上部叶鞘＞中、下部叶鞘干重，上部茎＞中部茎＞下部茎。同时，叶片氮含量高于叶鞘和茎，上部叶片氮含量高于其他部位氮含量，不同部位叶鞘中氮含量表现为上部＞中部＞下部，而不同部位茎中氮含量差异不显著。不同部位叶片、叶鞘和茎中磷含量均表现为上部＞中部＞下部。上部叶片中钾含量高于其他部位，而不同部位叶鞘和茎中钾含量则表现为上部＞中部＞下部。此外，YT60和BC2-32的整株氮、磷素累积量高于其他参试基因型，但YT60的整株钾累积量最高，BC2-32最低。所有基因型甘蔗不同部位叶片氮、磷、钾素累积量表现出为新＞上部＞中部＞下部；上部叶鞘氮、磷、钾素累积量显著高于中、下部叶鞘；而不同部位茎中氮素累积量均是上部茎＜中部茎＜下部茎，不同部位茎中磷、钾素累积量差异不显著。说明在相同种植条件下，不基因型甘蔗养分需求量不同，且对体内养分再利用能力不同。
재전간충식조건하，우감자수획기，측정분석료5개불동기인형감자지상부각부위적간중화담、린、갑함량。결과표명，재삼시적5개기인형감자중，월당60호(YT60)화반모잡교후대(BC2-32)적협편간중현저고우기타3개기인형감자，YT60협초화경간중균최고。5개기인형감자불동부위협편、협초화경간중평균치래간，신협편＞상、중부협편＞하부협편，상부협초＞중、하부협초간중，상부경＞중부경＞하부경。동시，협편담함량고우협초화경，상부협편담함량고우기타부위담함량，불동부위협초중담함량표현위상부＞중부＞하부，이불동부위경중담함량차이불현저。불동부위협편、협초화경중린함량균표현위상부＞중부＞하부。상부협편중갑함량고우기타부위，이불동부위협초화경중갑함량칙표현위상부＞중부＞하부。차외，YT60화BC2-32적정주담、린소루적량고우기타삼시기인형，단YT60적정주갑루적량최고，BC2-32최저。소유기인형감자불동부위협편담、린、갑소루적량표현출위신＞상부＞중부＞하부；상부협초담、린、갑소루적량현저고우중、하부협초；이불동부위경중담소루적량균시상부경＜중부경＜하부경，불동부위경중린、갑소루적량차이불현저。설명재상동충식조건하，불기인형감자양분수구량불동，차대체내양분재이용능력불동。
The dry matter, nitrogen, phosphorous and potassium uptake and accumulation of 5 sugarcane genotypes were studied in harvest stage. The results showed that the leaves dry weight of YT60 and BC2-32 were higher than those of other genotypes, and dry weight of sheaths and stems of YT60 were the highest among genotypes. The average of leaves dry weight in different parts of 5 sugarcane genotypes were in the rank of new > upper and middle > lower, those of sheaths were in the rank of upper > middle and lower, and those of stems were upper > middle > lower. Meanwhile, the nitrogen content in leaves of 5 sugarcane genotypes were higher than those of sheaths and stems, and the nitrogen content in upper leaves were higher than those in other parts. The nitrogen content in different parts of sheaths were expressed as upper > middle > lower, but there were no significant difference among different parts of stems in the nitrogen content. The phosphorous content in different parts of leaves, sheaths and stems of were expressed as upper > middle > lower. The potassium content in upper leaves were higher than those in other parts, but the potassium content in different parts of sheaths and stems were expressed as upper > middle > lower. In addition, the nitrogen and phosphorous accumulation in whole plant of YT60 and BC2-32 were higher than those of other genotypes. But the potassium accumulation in whole plant of YT 60 was the highest and that of BC2-32 was the lowest in 5 genotypes. The nitrogen, phosphorous and potassium accumulation in leaves of 5 sugarcane genotypes were in the rank of new > upper > middle > lower. The nitrogen, phosphorous and potassium accumulation in upper sheaths were significant higher than those in middle and lower sheaths. The nitrogen accumulation in stems were expressed as upper < middle < lower, but no significant difference of the phosphorous and potassium accumulation in stems was found among different parts. This suggests that under the same planting conditions, the nutrient uptake of different sugarcane genotypes were different, and the reutilization ability in plant was different.