蘆筍之無機營養研究(二)、氮及磷之營養對產量及品質之影響

Abstract

1.由田間及盆栽試驗之結果可知，蘆筍在土壤水分缺乏時不再發生新嫩莖。此時已存在之上植生部分之淨光合作用產物可蓄積於儲藏根中。經二至三個月後地上部擬葉衰老黃萎。如再予灌溉及施用氮肥，則嫩莖可連續發生，嫩莖生長迅速，能收齊一產品品質供應之效。此原則可為發展新的蘆筍栽培制度之參考。 1.From the observation of both field and pot experiments, it is concluded, that if the asparagus is cultivated under certain water stressed condition, no more sprout will develop just like the dormancy of asparagus during the winter season in the north. So that the excess of photosynthetate of the intact vegetative parts could accumulate in the storage roots to form reserve. If water stress should prolonged for 2-3 months, the vegetative parts will finally wilt. If the culture should then be irrigated, sprout developement will be triggered. This fact can be advantagously applied for a new asparagus clutivation practice.