Characteristics of the nutrient absorption and effects of raising term of rootstock on the yield and quality of Chinese chive under plastic house cultivation
2015
Inoue, K.
Changes of soil nutrient and characteristics of the nutrient absorption in Chinese chive (Allium tuberosum Rottler) under plastic house cultivation were investigated. The amount of soil nutrients, especially nitrogen and potassium, was decreased after harvesting as compared with planting. Yield of 612 kg/a consequent to four times harvesting was resulted from the absorption of 4.4kg/a nitrogen, 1.3kg/a phosphate, 7.0kg/a potassium, 0.6kg/a calcium and 0.5kg/a magnesium. The amount of mineral element and carbohydrate in plant was increased from three months after planting to removing upper parts (September to October). These results are useful for the efficient fertilizer application and production with decreased nitrate content. Effects of raising term of rootstock on the yield and quality under plastic house cultivation were investigated. Increasing of raising term of rootstock resulted delay of harvest time but high yield and quality. High profit was expected when it was between 150 and 190 days. The unit price was the highest when the upper parts were harvested in December with 150 days. The highest yields and quality was recognized when it was 190 days.
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