Irrigation Systems and Fertilizer Affect Petunia Growth
Irrigation Systems and Fertilizer Affect Petunia Growth
复制标题
灌溉系统和肥料影响矮牵牛生长
DOI：
10.21273/horttech.11.3.416
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发表时间：
2001
期刊：
影响因子：
1
通讯作者：
T. Broschat
中科院分区：
文献类型：
--
作者：
K. A. Klock;T. Broschat
通过两个试验比较了"超白色"矮牵牛（Petonia × hybrida）在地下灌溉系统和人工灌溉系统中的生长情况。在Expt.试验1中，以50、100、150ppm（mg·L-1）的Peter 's20 - 10 - 20（20N-4.4P-16.6K）的氮素溶液浇灌矮牵牛植株，并以50、100、150ppm（mg·L-1）的氮素溶液浇灌矮牵牛植株。2、Nutricote 13 - 13 - 13（13N-5.8P-10.8K）100型控释肥料在移栽前以3、6、9 lb/yard 3（1.8、3.6、4.5 kg·m-3）的施用量掺入生长基质中。在这两个实验中，有矮牵牛芽干质量或最终的花数之间的灌溉系统在最低的施肥率，但差异是明显的，在较高的施肥率没有差异。在Expt. 1、地下灌溉矮牵牛植株的地上部干重和花数在100 ppm的N施肥下大于相同比例的手浇植株。然而，与150 ppm的N施肥的手浇矮牵牛植物相比，用150 ppm的N施肥的地下灌溉矮牵牛植物较小，花较少。用150 ppm的N进行地下灌溉的矮牵牛植物的基质电导率（EC）浓度是用150 ppm的N手工浇水的盆中的浓度的4.9倍。在Expt. 2，以6和9磅/码3施肥的地下灌溉矮牵牛植物比以相同速率施肥的手浇植物更大，花更多。虽然基质EC浓度在地下灌溉基质中高于手工灌溉基质，但所有手工灌溉植物的基质EC浓度均约为0.35 dS·m-1。与这些实验中使用的类似的地下灌溉台似乎是种植"超白色"矮牵牛植物的可行方法。然而，使用彼得的20 - 10 - 20在浓度大于100 ppm的N与地下灌溉似乎是有害的矮牵牛生长可能是因为高EC浓度的基板。另一方面，在所有测试的速率下使用Nutricote 13 - 13 - 13型100的地下灌溉似乎对矮牵牛的生长没有不利影响。
Two experiments were conducted to compare the growth of ‘Ultra White’ petunia (Petunia ×hybrida) plants in a subirrigation system versus in a hand-watered system. In Expt. 1, petunia plants were watered with 50, 100, or 150 ppm (mg·L–1) of N of Peter’s 20–10– 20 (20N–4.4P–16.6K) and in Expt. 2, Nutricote 13–13–13 (13N–5.8P– 10.8K) type 100, a controlled release fertilizer, was incorporated into the growing substrate, prior to transplanting, at rates of 3, 6, or 9 lb/ yard3 (1.8, 3.6, or 4.5 kg·m–3). In both experiments, there was no difference in petunia shoot dry mass or final flower number between the irrigation systems at the lowest fertilization rate but differences were evident at the higher fertilization rates. In Expt. 1, shoot dry mass and flower number of subirrigated petunia plants fertilized with 100 ppm of N was greater than for hand-watered plants fertilized at the same rate. However, subirrigated petunia plants fertilized with 150 ppm of N were smaller with fewer flowers than handwatered petunia plants fertilized with 150 ppm of N. Substrate electrical conductivity (EC) concentrations for petunia plants subirrigated with 150 ppm of N were 4.9 times greater than concentrations in pots hand-watered with 150 ppm of N. In Expt. 2, subirrigated petunia plants fertilized with 6 and 9 lb/yard3 were larger with more flowers than hand-watered plants fertilized at the same rates. Although substrate EC concentrations were greater in subirrigated substrates than in hand-watered substrates, substrate EC concentrations of all hand-watered plants were about 0.35 dS·m–1. Subirrigation benches similar to those used in these experiments, appear to be a viable method for growing ‘Ultra White’ petunia plants. However, the use of Peter’s 20–10–20 at concentrations greater than 100 ppm of N with subirrigation appeared to be detrimental to petunia growth probably because of high EC concentrations in the substrate. On the other hand, the use of subirrigation with Nutricote 13–13–13 type 100 incorporated at all of the rates tested did not appear to be detrimental to petunia growth.