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首页> 外文期刊>HortTechnology >Effects of Preplant Nitrogen and Sulfur Fertilizer Sources on Strawberry.
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Effects of Preplant Nitrogen and Sulfur Fertilizer Sources on Strawberry.

机译：种植前氮和硫肥源对草莓的影响。

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Field studies were conducted to determine effects of preplant nitrogen (N) and sulfur (S) sources on Strawberry Festival strawberry (Fragaria xananassa) growth and yield. Six treatments resulted from the preplant application of ammonium nitrate [AN (34% N)], ammonium sulfate [AS (21% N and 24% S)], ammonium sulfate nitrate [ASN (26% N and 14% S)], polymer-coated AS [PCAS (20% N and 23% S)], and elemental S (90% S). A nontreated control was added. The N was fixed at 50 lb/acre for AN, AS, ASN, and PCAS, which resulted in S rates of 0, 57, 27, and 57 lb/acre, respectively. The S rate of the elemental S treatment was set at 57 lb/acre. For early fruit number, the highest values were found in plots treated with AS and elemental S, while the highest total fruit numbers were obtained in plots treated with AS, ASN, PCAS, and elemental S. There was no difference in total fruit numbers between the nontreated control and AN. Plots treated with elemental S, PCAS, ASN, and AS had the highest early marketable fruit weights, whereas the lowest early marketable fruit weight was found in the nontreated plots. In comparison with the nontreated control plots, all the preplant fertilization programs improved early marketable fruit weight, with AN, AS, ASN, PCAS, and elemental S. Total marketable fruit weights were maximized in plots treated with preplant AS, ASN, PCAS, or elemental S. There was no difference between the total fruit weights obtained in the control and AN-treated plots. The data indicated that the strawberry total yield increases can be attributed to the use of preplant fertilizer sources containing S. This research may lead to a more appropriate use of N for strawberry production in Florida, minimizing the nitrate-leaching potential in high sandy soils by eliminating N sources from preplant fertilization programs.
机译：进行了田间研究，以确定种植前的氮（N）和硫（S）来源对草莓节草莓（Fragaria xananassa）生长和产量的影响。种植前施用硝酸铵[AN（34％N）]，硫酸铵[AS（21％N和24％S）]，硝酸铵[ASN（26％N和14％S）]进行六种处理，聚合物涂层的AS [PCAS（20％N和23％S）]和元素S（90％S）。加入未处理的对照。对于AN，AS，ASN和PCAS，N固定为50磅/英亩，导致S比率分别为0、57、27和57磅/英亩。元素S处理的S速率设置为57磅/英亩。对于早期水果数，在用AS和元素S处理的地块中发现最高值，而在用AS，ASN，PCAS和元素S处理的地块中获得最高总水果数。未经处理的对照和AN。用元素S，PCAS，ASN和AS处理的地块的早期可出售水果权重最高，而未处理的地块则具有最低的可出售早期果味权重。与未处理的对照地块相比，所有的种植前施肥计划均提高了AN，AS，ASN，PCAS和元素S的早期可销售水果的重量。在使用种植前的AS，ASN，PCAS或A处理的地块中，可出售的总水果重量最大化。在对照和AN处理样地中获得的总果实重量之间没有差异。数据表明，草莓总产量的增加可以归因于使用含S的预制肥料。该研究可能导致更适合在佛罗里达州使用N来生产草莓，从而最大程度地减少了高含沙土壤中硝酸盐的淋溶潜力。从种植前施肥计划中消除氮源。

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