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四、主要观赏植物的营养与施肥 (十二)郁金香 Sekhar(1981)的研究结果表明,早春郁金香表施氮肥,能获得大鳞茎的最高产量,同时鳞茎的含氮量也最高,故推荐在第一片叶萌发之前,每公顷施100公斤N素。 Bose等(1980)采用种植在砂混合培养基的郁金香作试材,所提供的营养液系以Gregory与Richards配方(1929)的1/2量配成。设置以下处理:全量营养液(对照);N、P、K1/10量营养液或N、P、K三倍量营养液。低氮(1/10N)处理的,其叶片最少;而较高氮处理的,则叶数增多。以1-3-1(N-P-K)及高N和K处理的,其鳞茎最重,直径也最大。随着N、P、K施用量的增加,花枝数及单株花朵数也增多。缺氮和缺磷处理的,其花朵直径小。
The nutrition of main ornamental plants and fertilization (12) The results of the study by Sekhar (1981) of tulips show that nitrogen fertilizer can be applied to tulip in early spring to obtain the highest yield of bulblets and the highest nitrogen content of bulbs. Therefore, A piece of leaf before germination, applied 100 kg of nitrogen per hectare. Bose et al. (1980) used tulip grown in sand mixed media as a test material and provided nutrient solutions in ½ volume of the Gregory and Richards formula (1929). Set the following treatments: full nutrient solution (control); N, P, K1 / 10 amount of nutrient solution or N, P, K three times the amount of nutrient solution. Low nitrogen (1 / 10N) treatment leaves the least; while higher nitrogen treatment, the number of leaves increased. With 1-3-1 (N-P-K) and high N and K treatment, the heaviest bulb and the largest diameter. With the increase of N, P, K application rate, the number of flowers and the number of flowers per plant also increased. Nitrogen deficiency and phosphorus deficiency treatment, the flowers of small diameter.