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首页> 外文期刊>Acta Horticulturae >Effect of Water and Fertilizer Coupling Modes on Soil and Leaf Nutrient Contents in a Pear Orchard
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Effect of Water and Fertilizer Coupling Modes on Soil and Leaf Nutrient Contents in a Pear Orchard

机译：水肥耦合模式对梨园土壤和叶片养分含量的影响

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摘要

With six- to seven-year-old pear trees, the effect of different water-fertilizer coupling modes on soil and leaf nutrient contents was studied in order to screen out a better combination by referring to some tree growth and development indexes. The results indicated that, the soil alkali-hydrolysable N contents with most treatments were significantly higher than the control in mid-April, with NT and NH treatments being the highest at 0-20 and 20-50 cm soil layers. In late May, the hydrolysable N contents were the highest with NT and NH treatments at 0-20 cm soil layer, significantly higher than other treatments. As for the available P contents, NT and NH treatments were higher. In late July at 0-20 and 20-50 cm soil layers, the hydrolysable N content was higher with NH treatment and it was the highest at 50-80 cm soil layer. The available P content with NH treatment was the highest at 0-20 cm soil layer. At 20-50 cm soil layer the available K content of NT treatment was the highest. In early September, the hydrolysable N contents with NT and NH treatments were the highest at three soil layers. As for available P contents, at 0-20 cm soil layer, NT and NH treatments were the highest and at 20-50 and 50-80 cm soil layers, NT treatment was the highest with NH treatment being next to it, significantly higher than most of the treatments. The available K contents were the highest with NT treatment at three soil layers. Averagely, NH treatment could maintain higher soil available nitrogen contents during the growing season. Under different water-fertilizer coupling conditions, leaf N, K and Fe contents were the highest with NH treatment and the leaf B level with NT treatment was also significantly higher than the control. Leaf Mn content was the highest with NT treatment and it was also higher with NH than with other treatments. In view of development of pear trees, NH treatment had higher average fruit weight as well as the highest SSC.
机译：对于六到七岁的梨树，研究了不同水肥耦合模式对土壤和叶片养分含量的影响，以便通过参考一些树木的生长发育指标筛选出更好的组合。结果表明，在4月中旬，大多数处理的土壤碱解氮含量均显着高于对照，其中NT和NH处理在0-20和20-50 cm土层最高。在5月下旬，在0-20厘米土壤层，NT和NH处理的可水解氮含量最高，显着高于其他处理。至于可利用的P含量，NT和NH处理较高。在7月下旬0-20和20-50 cm土层，可水解氮含量在NH处理下更高，在50-80 cm土层最高。 NH处理的有效磷含量在0-20 cm土层最高。在20-50 cm的土壤层中，NT处理的有效K含量最高。 9月初，经NT和NH处理的可水解氮含量在三个土层中最高。至于可利用的磷含量，在0-20 cm土层，NT和NH处理最高，而在20-50和50-80 cm土层，NT处理最高，紧随其后的是NH处理，明显高于大多数的治疗方法。在三层土壤中，NT处理的有效钾含量最高。平均而言，NH 3处理可以在生长期维持较高的土壤有效氮含量。在不同的水肥耦合条件下，NH处理可使叶片N，K和Fe含量最高，而NT处理可使叶片B含量显着高于对照。 NT处理的叶片锰含量最高，NH处理的叶片锰含量也高于其他处理。鉴于梨树的发展，NH处理具有较高的平均果实重和最高的SSC。

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