Effect of Soil Moisture on Growth and Nutrient Composition of Houttuynia cordata Thunb
The effect of soil moisture on germination, growth, yield and nutrient composition of Houttuynia cordata Thunb were studied with the potted experiment method, in order to reveal the water metabolism law of HCT and give a correct guidance in the standard-drafting out of operation procedure of H. cordata Thunb cultivation. The results indicated, the optimum soil relative water-retaining capacities (RH) for breeding stems germination of H. Cordata Thunb was 90% and the high soil RH was beneficial to stem elongation and yield formation. The RH of 85% in the soil during covering row space stage and the soil RH of 80% during flowering and fruiting stage were beneficial to higher yield and the higher nutrient value.The excessive low soil RH made the yield and nutrient value of H. cordata Thunb reduction and the excessive high soil RH could promote high yield but nutrient value.