不同施肥方式对鱼腥草生长发育及产量的影响

采用单因子随机区组设计,通过测定鱼腥草株高、分枝数和鲜重,分析了5种肥料对鱼腥草生长发育和产量的影响。结果表明,鱼腥草在种植初期生长较慢,施用有机肥有利于增加鱼腥草生长后期的株高和分枝数,其中以鸭粪和猪粪的作用最明显。施用有机肥对鱼腥草有增产作用,以中等施肥水平鸭粪的鱼腥草产量最高。增施有机肥量对鱼腥草地下部的增产作用高于化肥和常规肥。在鱼腥草人工栽培中,鱼腥草施肥宜选择鸭粪为主,与其它有机肥(人粪尿、猪粪)配合施用,并在植株生长前期和后期辅以少量速效化肥。在施肥水平上,人粪尿、猪粪、鸭粪、施用量依次以108000kg/hm2,54000kg/hm2,45000kg/hm2为宜。

Effects of Fertilizers Application Rates on Growth and Yield of Houttuynia cordata Thunb

Single factor randomized block design, with the measurement height, branches and fresh weight, was employed to analysis the effects of 5 fertilizers on the growth and yield of Houttuynia cordata Thunb. The result showed that the plant grew slowly at the early stage after transplanted, the application of organic fertilizers was beneficial to the development of plant height and branches at later stage, and manure of duck acted as the best one. It also showed that the application of organic fertilizers increased the yield of Houttuynia cordata Thunb, with a highest yield was detected in application of duck excretion at moderate level, especially for the underground part of the plant, which was higher than the application of chemical and traditional fertilizer. From the result of the test, we suggested that duck excrement was the best one of organic fertilizer for the cultivation of Houttuynia cordata Thunb, and can be mixed with other organic fertilizers, such as manure of human and pig, incooperation with and grow moreover a small amount of quick-acting chemical fertilizer is needed at earlier and later growth stage of the plant. In the application of organic fertilizers, 108000 kg/hm2 of human manure, 54000 kg/hm2of pig manure and 45000 kg/hm2 of duck manure were recommended respectively.