在山东莱州海涂采用正交试验设计进行田间试验,研究了不同浓度海水灌溉下菊芋盐肥耦合效应。结果表明:(1)综合肥水情况下,在25%海水(W2)灌溉下菊芋块茎和地上部分生物产量与淡水处理(W1)没有显著差异,在50%(W3)和75%(W4)海水灌溉下产量...在山东莱州海涂采用正交试验设计进行田间试验,研究了不同浓度海水灌溉下菊芋盐肥耦合效应。结果表明:(1)综合肥水情况下,在25%海水(W2)灌溉下菊芋块茎和地上部分生物产量与淡水处理(W1)没有显著差异,在50%(W3)和75%(W4)海水灌溉下产量均显著下降,与淡水比较,下降幅度达32%、76%和25%、60%;N3(150 kg hm-2)水平与N1(0 kg hm-2)水平相比,菊芋块茎产量可以显著提高77%,同样地上部分生物产量也提高了37%,而N4(225 kg hm-2)处理比在N3情况下低,但仍高于N2(75 kg hm-2)处理;P3(60 kg hm-2)水平与P1(0 kg hm-2)水平相比,菊芋块茎产量可以显著提高97%,同样地上部分生物产量也提高了39%,在P4(90 kg hm-2)处理下,菊芋块茎和地上部分生物产量分别比在P3处理下低19%和11%。(2)各浓度海水浇灌下,随着施氮、磷量的增加菊芋主茎普遍增长和增粗。(3)经过对海水与N肥及P肥的交互作用分析,可以看出W2N3和W2P3是优化组合;处理因子分析表明,影响菊芋产量的主要因素是不同浓度海水灌溉,N肥和P肥次之,其优化组合为W2N3P3。展开更多
Building waterfowls pond and building fish pond for ameliorating saline land are two different models of wetland utilization on seashore in Jiangsu Province, China. In this paper, ecological-economic benefits of the t...Building waterfowls pond and building fish pond for ameliorating saline land are two different models of wetland utilization on seashore in Jiangsu Province, China. In this paper, ecological-economic benefits of the two subsystems are evaluated with emergy analysis method,and some suggestions are given about sustainable development of seashore. Some emergy indices are calculated as following: the emergy investment ratio (Ir) are 7.07 and 1.02×10 -2 ; the Export-feedback ratio (Fr) are 0.457 and 3.95; the Actual emergy yield ratio (Yr) are 54.00 and 4.00×10 -3 , the change of stored emergy (Nc) are 3.65×10 20 J and -5.16×10 19 J. for waterfowl and fish pond,respecfively. These indices show that: First, in order to reduce the habitat pressure of coastal birds, it is necessary to build waterfowl pond at the edge of core zone of natural reserve on seashore. Second, in order to ameliorate saline land rapidly, it is applicable for suitable use in non-core zone of natural reserve and other seashore area. Third, in order to measure coordination between natural reserve and economic development, it is essential that core zone should be enlarged in natural reserve, and the economic development should be limited in buffer zone of natural reserve and non-natural reserve area.展开更多
文摘在山东莱州海涂采用正交试验设计进行田间试验,研究了不同浓度海水灌溉下菊芋盐肥耦合效应。结果表明:(1)综合肥水情况下,在25%海水(W2)灌溉下菊芋块茎和地上部分生物产量与淡水处理(W1)没有显著差异,在50%(W3)和75%(W4)海水灌溉下产量均显著下降,与淡水比较,下降幅度达32%、76%和25%、60%;N3(150 kg hm-2)水平与N1(0 kg hm-2)水平相比,菊芋块茎产量可以显著提高77%,同样地上部分生物产量也提高了37%,而N4(225 kg hm-2)处理比在N3情况下低,但仍高于N2(75 kg hm-2)处理;P3(60 kg hm-2)水平与P1(0 kg hm-2)水平相比,菊芋块茎产量可以显著提高97%,同样地上部分生物产量也提高了39%,在P4(90 kg hm-2)处理下,菊芋块茎和地上部分生物产量分别比在P3处理下低19%和11%。(2)各浓度海水浇灌下,随着施氮、磷量的增加菊芋主茎普遍增长和增粗。(3)经过对海水与N肥及P肥的交互作用分析,可以看出W2N3和W2P3是优化组合;处理因子分析表明,影响菊芋产量的主要因素是不同浓度海水灌溉,N肥和P肥次之,其优化组合为W2N3P3。
文摘Building waterfowls pond and building fish pond for ameliorating saline land are two different models of wetland utilization on seashore in Jiangsu Province, China. In this paper, ecological-economic benefits of the two subsystems are evaluated with emergy analysis method,and some suggestions are given about sustainable development of seashore. Some emergy indices are calculated as following: the emergy investment ratio (Ir) are 7.07 and 1.02×10 -2 ; the Export-feedback ratio (Fr) are 0.457 and 3.95; the Actual emergy yield ratio (Yr) are 54.00 and 4.00×10 -3 , the change of stored emergy (Nc) are 3.65×10 20 J and -5.16×10 19 J. for waterfowl and fish pond,respecfively. These indices show that: First, in order to reduce the habitat pressure of coastal birds, it is necessary to build waterfowl pond at the edge of core zone of natural reserve on seashore. Second, in order to ameliorate saline land rapidly, it is applicable for suitable use in non-core zone of natural reserve and other seashore area. Third, in order to measure coordination between natural reserve and economic development, it is essential that core zone should be enlarged in natural reserve, and the economic development should be limited in buffer zone of natural reserve and non-natural reserve area.
