CAJ | 학술논문

采用田间试验研究不同基础肥力土壤、不同氮肥水平对生姜产量和品质及氮素吸收的影响.结果表明,氮肥对生姜根茎产量及品质有明显的影响,合理施氮能显著提高根茎产量,改善其营养及安全品质.两种不同基础肥力土壤下,生姜根茎产量均表现为随施氮量的加大先增加后降低,呈抛物线关系,所有处理中N_(450)获得了最高根茎产量.品质分析结果显示,施用适量氮肥能明显提高生姜根茎蛋白质、维生素C、糖分和姜精油含量,有效控制硝酸盐及亚硝酸盐含量.其中,维生素C含量,基础肥力较高土壤以N_(225)处理最高;肥力较低土壤N_(450)处理达到高峰.粗蛋白含量,肥力较高土壤N_(225)处理最高,N_(450)最低;肥力较低土壤,随施氮量的增加,根茎粗蛋白含量相应提高,N_(600)处理达最大值.糖分和姜精油含量,两种肥力土壤下分别是N_(600)和N_(450)处理最高.根茎硝酸盐和亚硝酸盐含量随施氮量的增加而升高,与氮肥用量呈极显著正相关.施用氮肥后生姜地上部茎、叶和地下根茎含氮量明显提高,氮素吸收量显著增多.
채용전간시험연구불동기출비력토양、불동담비수평대생강산량화품질급담소흡수적영향.결과표명,담비대생강근경산량급품질유명현적영향,합리시담능현저제고근경산량,개선기영양급안전품질.량충불동기출비력토양하,생강근경산량균표현위수시담량적가대선증가후강저,정포물선관계,소유처리중N_(450)획득료최고근경산량.품질분석결과현시,시용괄량담비능명현제고생강근경단백질、유생소C、당분화강정유함량,유효공제초산염급아초산염함량.기중,유생소C함량,기출비력교고토양이N_(225)처리최고;비력교저토양N_(450)처리체도고봉.조단백함량,비력교고토양N_(225)처리최고,N_(450)최저;비력교저토양,수시담량적증가,근경조단백함량상응제고,N_(600)처리체최대치.당분화강정유함량,량충비력토양하분별시N_(600)화N_(450)처리최고.근경초산염화아초산염함량수시담량적증가이승고,여담비용량정겁현저정상관.시용담비후생강지상부경、협화지하근경함담량명현제고,담소흡수량현저증다.
Field experiments were conducted to study the effects of different nitrogen(N) application rates on yield and qualities in ginger(Zingiber officinale) rhizome and absorption of nutrient.The results showed that there were obvious effects of different N application rates on ginger rhizome yield and qualities,a rational N application could remarkably increase rhizome yield and improve nutrition and security quality.At two different basal fertility soils,ginger rhizome yield all increased first and dropped later along the increase of N application rates with a parabola relationship between yield and applying N rates.and the higheat rhizome yield was obtained by the treatment of N_(450).The results of quality analyses indicated that a suitable N application rate could improve the content of protein,vitamin C,sugar and essential oil in ginger rhizome remarkably and control the concentration of nitrate and nitrite efficiently.The content of vitamin C reached the highest value respectively for the treatment of N_(225) and N_(450) at higher and lower basal soil fertility.The higheat and lowest value of roush protein was obtained by the treatment N_(225) and N_(450) respectively at higher basal soil fertility,but it might rise when increased N application rote,and the highest was obtained by the treatment N_(600) at lower soil fertility.The concentration of essential oil and soluble sugar all reached the highest by the treatment N_(600) and N_(450) at two different soil fertilitie8 respectively.The content of nitrate and nitrite in ginger rhizome all increased along with the increases of N application rates with very significant positive relationship.The N concentration in ginger shoot and rhizome lose significantly,and the uptake of N in ginger shoot and rhizome increased outstandingly compared the treatment applied N withthe control.