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首页> 外文期刊>Journal of Tropical Forest Science >EFFECTS OF SPACING AND IRRIGATION LEVELS ON GROWTH AND BIOMASS PRODUCTION IN SALVADORA PERSICA
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EFFECTS OF SPACING AND IRRIGATION LEVELS ON GROWTH AND BIOMASS PRODUCTION IN SALVADORA PERSICA

机译：间隔和灌溉水平对紫花苜蓿生长和生物量生产的影响

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摘要

Salvador a persica (family Salvadoraceae), popularly known as "Khara Jhal/Pilu", is a perennial shrub/tree found in the Indian desert. Its green branches and roots are used as chewing sticks, known as meswak. The whole plant is used for the preparation of medicines in ayurveda, homeopathy and unani systems of medication. Under soil-water stress conditions, the growth of this plant is very much restricted. Soil profile from different plant communities associated with Salvadora show that it prefers medium- and fine-textured soil, particularly sandy loams, sandy clay loams and light clays of good depth (Gupta & Saxena 1968). Plant density is yet another important factor which affects plant growth characteristics. Competitive ability of plants in a community varies greatly and depends upon the density of plants per unit area. High plant densities, in general, adversely affect the plant growth and development. Nutrient uptake is affected by fertiliser application and plant density in a unit area. Plantgrowth and development in arid regions are dependent entirely on the availability of soil moisture, which is highly unpredictable. Application of fertilisers and maintaining optimum plant populations assume great importance in yield maximisation. These requirements may vary according to cultivar, soil fertility, soil condition as well as agroclimate of the region. With increasing demand for fodder, fuel and timber, tree-planting activities have been accorded the highest priority in desert development programmes. The studies of tree crop interaction under varying spacing regimes are required in order to improve productivity of agroforestry systems (Gupta et al., 1998). In arid regions, irrigation is a costly input in crop production and has not receivedadequate attention from Indian researchers working in medicinal and aromatic plants (Gupta & Chadha 1995). In view of the harsh climatic conditions of the arid region, it is essential to study the optimum water requirements of the desirable plants to obtain maximum production potential under constraints of various resources, so as to optimise the available resources. Keeping this in view, the present studies were conducted to find out the optimum spacing level and water requirement of S. persica to achieve maximum plant growth and biomass production under arid zone conditions.
机译：Salvador a persica（家庭Salvadoraceae），俗称“ Khara Jhal / Pilu”，是一种在印度沙漠中发现的多年生灌木/乔木。它的绿色树枝和根被用作香根草（meswak）。整个植物用于制备印度草医学，顺势疗法和单药系统中的药物。在土壤水分胁迫条件下，该植物的生长受到很大限制。与Salvadora相关的不同植物群落的土壤概况表明，它更喜欢中质地和细质地的土壤，特别是沙壤土，沙质壤土和深度较深的轻质土壤（Gupta＆Saxena 1968）。植物密度是另一个影响植物生长特性的重要因素。群落中植物的竞争能力差异很大，并取决于单位面积植物的密度。通常，高植物密度会对植物的生长和发育产生不利影响。营养素的吸收受单位面积施肥和植物密度的影响。干旱地区的植物生长和发育完全取决于土壤水分的可用性，这是高度不可预测的。施肥和维持最佳植物种群在最大程度提高产量中至关重要。这些要求可能会因品种，土壤肥力，土壤状况以及该地区的农业气候而异。随着对饲料，燃料和木材的需求增加，植树活动已被列为沙漠发展方案中的最高优先事项。为了提高农林业系统的生产力，需要研究在不同间隔制度下的林木作物相互作用（Gupta等，1998）。在干旱地区，灌溉是农作物生产中的一项昂贵的投入，没有得到从事药用和芳香植物研究的印度研究人员的足够重视（Gupta＆Chadha 1995）。鉴于干旱地区的恶劣气候条件，必须研究理想植物的最佳需水量，以便在各种资源的限制下获得最大的生产潜力，从而优化可用资源。考虑到这一点，进行本研究是为了找出在干旱地区条件下达到最大植物生长和生物量生产的最佳的S. persica间距水平和水分需求。

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