Abstract:

In order to provide basis for formulating high yield and good quality cultivation technologies of Pinellia ternata of Bijie, different sizes tuber (tuber diameter＜1.0 cm, 1.0-1.5 cm, 1.5-2.0 cm, ≥2.0 cm) was planted to study the effect on production and related properties, total alkaloid content of product. The fresh tuber production of Pinellia ternata increased with tuber-size increasing, and the production differences of different sizes tuber were highly significant. The net addition production planting with tuber diameter of 1.5-2.0 cm was the tallest, and the second was 1.0-1.5 cm. Total grain number of Pinellia ternate tuber planting with tuber of tuber diameter between 1.0 cm and 1.5 cm was the highest, followed by 1.5-2.0 cm, ≥2 cm and ＜1 cm. The ratio for input and output of planting with tuber of tuber diameter＜1.0cm was the tallest, and the second was 1.0-1.5 cm. With the increasing of tuber diameter, quantity of small tubers decreased, fresh weight reduced and the proportion of small tubers’ quantity to total grain quantity and total fresh weight declined. The proportion of big and middle tubers’ quantity and fresh weight to total grain quantity and total fresh weight rose with increasing of tuber diameter. In the middle of Pinellia ternate growth, length and width of middle leaf, plant height added with increasing of tuber diameter. The order of total alkaloid content of Pinellia ternate product was 1.0-1.5 cm, 1.5-2.0 cm, ≥2.0 cm and ＜1.0 cm. Tuber of 1.0-1.5 cm should be planted in Pinellia ternate’s production and small tuber of tuber diameter＜1.0 cm should be used to enlarge tuber’s number.