Effects of Planting Densities under Different Soil Fertility Conditions and Its Interaction with Fertilization on Ginger Yield
In order to make the ginger industry bigger and stronger,reduce fertilizer loss and control non-point source pollution,and improve the yield of ginger better at the same time,the reasonable planting density of ginger in different fertility lands and the reasonable fertilization amounts under different planting densities in high-fertility land were explored.A single-factor experiment was conducted on the effects of planting density on the growth and yield of'Laiwu'ginger under different soil fertility conditions,and a comparative experiment with two-factor interaction was conducted on the effects of planting densities(with 4 000,5 000,6 000 plants per 667 m2 in treatment A1,A2,A3,respectively)and fertilization amounts(with N,P2O5,K2O of 40,7.5,55 kg per 667 m2 in B1,42,7.5,57 kg per 667 m2 in B2,44,7.5,59 kg per 667 m2 in B3,respectively)on the yield of ginger.The results showed that under the conditions of different fertility lands,in the range of 3 000-6 000 plants per 667 m2 in high-fertility land,4 000-7 000 plants per 667 m2 in medium-fertility land and 5 000-8 000 plants per 667 m2 in low-fertility land,the plant height of ginger increased with the increase of planting densities,while the number of branches and yield of 667 m2 increased first and then decreased.Reasonable planting densities were convenient to improve the rhizome weight of a single plant and obtain high yield.In production,it was recommended to plant about 5 000 plants per 667 m2 in high-fertility land,about 6 000 plants per 667 m2 in medium-fertility land and about 7 000 plants per 667 m2 in low-fertility land.The results of the experiment on the two-factor interaction of planting density and fertilization amounts showed that the effects of planting density,fertilization amounts,and the interaction of planting density and fertilization amounts on the plot yield reached an extremely significant difference level in high-fertility land.The highest plot yield was 321.8 kg when the planting density was 5 000 plants per 667 m2,the highest plot yield was 314.4 kg when the fertilization amounts of N,P2O5,K2O were 42,7.5,57 kg per 667 m2,respectively,and the highest plot yield was 419.2 kg when the planting density and fertilization amounts mentioned above were interacted.In production,it was recommended to apply N,P2O5,K2O of 42,7.5,57 kg per 667 m2 in high-fertility land with 5 000 plants per 667 m2,choose the mass of seed rhizome about 100 g,and adopt row spacing of 60 cm and plant spacing of 22 cm.
万方数据
维普
