[Study on dry matter accumulations of Houttuynia cordata on heavy loam].

ABSTRACT

In this paper the characteristics of dry matter accumulation of Houttuynia cordata cultivated on three kinds of heavy loams were studied. The results showed that the accumulated curves of whole plant dry matter were somewhat different. During testing period, the accumulated curves of dry matter of Houttuynia cordata grown on clay silt loam and silt sand loam presented logistic ones, but those grown on sandy silt loam were still in line growth period. It was concluded that the harvest period of Houttuynia cordata on the sandy silt loam could be properly put off while only considered the yielding. The experiment on heavy loam also showed that the sandy field should be the better selection than others, but organic fertilizer should be enhanced as base fertilizer, with proper nitrogen as top application. This paper also discussed the dry matter accumulations of different organs of Houttuynia cordata.