CAJ | 학술논문

在陕北黄土高原具隔水小区的日光温室内,设计完全随机区组试验,研究了不同水肥组合对结瓜期黄瓜叶片生长和产量的影响.结果表明,在结瓜期,所有处理黄瓜叶面积逐渐增加,而叶片扩展速率、叶片组织含水率、叶片中游离脯氨酸(PRO)和丙二醛(MDA)含量、黄瓜产量和水分利用效率(WUE)均先增加后降低;当土壤含水率一致时,高肥处理(N:600 kg/hm~2,P_2O_5:420 kg/hm~2)叶面积、叶片扩展速率、产量和WUE显著高于低肥处理(N:420 kg/hm~2,P_2O_5:294 kg/hm~2);低肥处理产量随土壤含水率增加而增加,高肥处理随土壤含水率增加先增加后降低,WUE随土壤含水率增加而降低.中水高肥处理(WmFh)的叶片净光合速率(Pn)和蒸腾速率(Tr)日变化均高于其他处理.表明,中水高肥处理(田间持水率＞75%～90%,施用N:600 kg/hm~2,P_2O_5:420 kg/hm~2)黄瓜在结瓜期叶片生长健壮、光合作用强、产量较高,节约了水资源.
재협북황토고원구격수소구적일광온실내,설계완전수궤구조시험,연구료불동수비조합대결과기황과협편생장화산량적영향.결과표명,재결과기,소유처리황과협면적축점증가,이협편확전속솔、협편조직함수솔、협편중유리포안산(PRO)화병이철(MDA)함량、황과산량화수분이용효솔(WUE)균선증가후강저;당토양함수솔일치시,고비처리(N:600 kg/hm~2,P_2O_5:420 kg/hm~2)협면적、협편확전속솔、산량화WUE현저고우저비처리(N:420 kg/hm~2,P_2O_5:294 kg/hm~2);저비처리산량수토양함수솔증가이증가,고비처리수토양함수솔증가선증가후강저,WUE수토양함수솔증가이강저.중수고비처리(WmFh)적협편정광합속솔(Pn)화증등속솔(Tr)일변화균고우기타처리.표명,중수고비처리(전간지수솔＞75%～90%,시용N:600 kg/hm~2,P_2O_5:420 kg/hm~2)황과재결과기협편생장건장、광합작용강、산량교고,절약료수자원.
Physiological characteristics of cucumber leaves and yield under different watering and fertilizer coupling treatments were determined with completely random experiment setup in greenhouse on Loess Plateau. The results showed that in all treatments leaf area became bigger, and those parameters such as leaf expansion speed (LES), leaf water level, the amount of free proline (PRO), malondialdehyde (MDA), yield and water use efficiency (WUE) were increased initially and then decreased at the fruit-bearing stage. When soil water content was at the same level, leaf area, leaf water level, WUE and yield were greater in the high fertilization treatment Fh (600 kg/hm~2 N and 420 kg/hm~2 P_2O_5 ) than in low fertilization treatment Fl (420 kg/hm~2 N and 294 kg/hm~2 P_2O_5). The yield was enhanced with soil water content increasing at low fertilization level; while at high fertilization level, the output rose and then declined with soil water content increasing. And the WUE in the two fertilization levels decreased with the soil water content increasing. The net photosynthetic (Pn) rate and transpiration (Tr) of the cucumber leaves in the treatment of WmFh (＞75%-90% soil water content, 600 kg/hm~2 N and 420 kg/hm~2 P_2O_5) were significantly greater than in other treatments, indicating that the water and fertilizer supply could meet the cucumber needs, making leaves grow vigorously and photosynthesis capability stronger, and attain high yield and save the water resource.