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首页> 外文期刊>Australian Journal of Crop Science >Evaluation of West Indian cherry (Malpighia emarginata) rootstock under saline water irrigation and nitrogen fertilization
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Evaluation of West Indian cherry (Malpighia emarginata) rootstock under saline water irrigation and nitrogen fertilization

机译：咸水灌溉和氮肥对西印度樱桃（Malpighia emarginata）砧木的评价

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This study aimed to evaluate the growth and quality of CMF 102 West Indian cherry rootstock subjected to irrigation with different salinity levels and nitrogen (N) doses. The experiment was carried out under protected environment, using a randomized block design in a 5 × 4 factorial scheme, with four replicates. Treatments consisted of five levels of electrical conductivity of water – ECw (0.3 – Control; 1.3; 2.3; 3.3 and 4.3 dS m~(-1) ) and four nitrogen doses (70, 100, 130 and 160% of N recommendation). CMI 102 West Indian cherry rootstock growth was evaluated through plant height, stem diameter, number of leaves, leaf area, shoot and total dry phytomass and Dickson quality index of seedlings 165 days after emergence. Additionally, the absolute growth rate of plant height was evaluated from 45 to 165 days after emergence. The results indicated that irrigation with ECw up to 2.22 dS m~(-1) leads to a maximum reduction of 10% in growth and in the quality of CMF 102 rootstock. Highest growth of CMF 102 West Indian cherry rootstock is obtained with fertilization of 70% of N. The plants of West Indian cherry irrigated with 4.3 dS m~(-1) of saline water showed an acceptable Dickson quality index; therefore, seedlings with IQD higher than 0.2 considered as good quality. In general, West Indian cherry plants can be classified as sensitive to irrigation with saline waters higher than 0.3 dSm~(-1) . No significant effect was found for the interaction between water salinity and N doses.
机译：这项研究旨在评估在不同盐度水平和氮（N）剂量下灌溉的CMF 102西印度樱桃砧木的生长和品质。实验是在受保护的环境下进行的，采用5×4析因方案的随机区组设计，重复四次。处理包括五个级别的水电导率– ECw（0.3 –对照; 1.3; 2.3; 3.3和4.3 dS m〜（-1））和四个氮剂量（推荐氮的70％，100％，130％和160％）。通过植物高，茎直径，叶片数，叶面积，枝条和总干植实量以及出苗后165天的狄克森品质指数对CMI 102西印度樱桃砧木的生长进行了评估。另外，在出苗后45至165天评估植物高度的绝对生长率。结果表明，ECw高达2.22 dS m〜（-1）的灌溉导致CMF 102砧木的生长和品质最大降低10％。施氮量为70％时，CMF 102西印度樱桃的砧木生长最快。西印度樱桃的植物用4.3 dS m〜（-1）的生理盐水灌溉时，其Dickson质量指数可以接受。因此，IQD高于0.2的幼苗被认为是优良品质。一般而言，西印度樱桃植物可归类为对高于0.3 dSm〜（-1）的盐水灌溉敏感的植物。没有发现水盐度和氮剂量之间的相互作用有显着影响。

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