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首页> 外文期刊>Water, Air, and Soil Pollution >Nitrate and Phosphate Leaching under Turfgrass Fertilized with a Squid-based Organic Fertilizer
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Nitrate and Phosphate Leaching under Turfgrass Fertilized with a Squid-based Organic Fertilizer

机译：鱿鱼基有机肥在草皮下硝态氮和磷的淋溶

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Consumer demand for cleaned squid generates a substantial amount of waste that must be properly disposed of, creating an economic burden on processors. A potential solution to this problem involves converting squid by-products into an organic fertilizer, for which there is growing demand. Because fertilizer application to lawns can increase the risk of nutrient contamination of groundwater, we quantified leaching of N0_3-N and PO_4-P from perennial ryegrass turf (Lolium perenne L.) amended with two types of fertilizer: squid-based (SQ) and synthetic (SY). Field plots were established on an Enfield silt loam, and liquid (L) and granular (G) fertilizer formulations of squid and synthetic fertilizers were applied at 0, 48, 146, and 292 kg Nha~(-1) year~(-1). Levels of NO_3-N and PO_4-P in soil pore water from a depth of 60 cm were determined periodically during the growing season in 2008 and 2009. Pore water NO_3-N levels were not significantly different among fertilizer type or formulation within an application rate throughout the course of the study. The concentration of NO_3-N remained below the maximum contaminant level (MCL) of 10 mg L~(-1) until midSeptember 2009, when values above the MCL were observed for SQG at all application rates, and for SYL at the high application rate. Annual mass losses of NO_3-N were below the estimated inputs (10 kg Nha~(-1) year~(-1)) from atmospheric deposition except for the SQG and SYL treatments applied at 292 kg Nha~(-1) year~(-1), which had losses of 13.2 and 14.9 kg Nha~(-1) year~(-1), respectively. Pore water PO_4-P levels ranged from 0 to 1.5 mg PL~(-1) and were not significantly different among fertilizer type or formulation within an application rate. Our results indicate that N and P losses from turf amended with squid-based fertilizer do not differ from those amended with synthetic fertilizers or unfertilized turf. Although organic in nature, squid-based fertilizer does not appear to be more—or less— environmentally benign than synthetic fertilizers.
机译：消费者对清洁鱿鱼的需求会产生大量必须适当处理的废物，给加工者带来了经济负担。解决该问题的潜在方法涉及将鱿鱼副产物转化为有机肥料，对此需求不断增长。由于在草坪上施用肥料会增加地下水养分污染的风险，因此我们对多年生黑麦草皮（黑麦草）的N0_3-N和PO_4-P淋溶进行了定量修正，并改良了两种肥料：鱿鱼基（SQ）和合成（SY）。在恩菲尔德粉砂壤土上建立田地，并在0、48、146和292 kg Nha〜（-1）年〜（-1）上施用鱿鱼和合成肥料的液态（L）和粒状（G）肥料配方。 ）。在2008年和2009年的生长季节中，定期测定60厘米深度土壤孔隙水中NO_3-N和PO_4-P的含量。在施肥量范围内，不同肥料类型或配方的孔隙水NO_3-N含量差异不显着。在整个学习过程中。直到2009年9月中旬，NO_3-N的浓度一直保持在最大污染物水平（MCL）10 mg L〜（-1）以下，直到在所有施用量下SQG均观察到高于MCL的值，而在高施用量SYL下观察到SYLG的值高于MCL。 。除SQG和SYL处理在292 kg Nha〜（-1）年外，NO_3-N的年质量损失低于大气沉积的估计输入量（10 kg Nha〜（-1）年〜（-1））。 （-1），分别损失了13.2和14.9 kg Nha〜（-1）年〜（-1）。孔隙水中PO_4-P的含量范围为0〜1.5 mg PL〜（-1），在施肥量范围内，肥料类型或配方之间的差异无显着性。我们的结果表明，用鱿鱼基化肥修正的草皮中的氮和磷损失与使用合成肥料或未施肥的草皮修正的氮和磷损失没有差异。鱿鱼基肥料虽然本质上是有机的，但在环境方面似乎并不比合成肥料好（或少）。

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