这是海德拉巴地区一个出售紫檀农场的消息，100万卢比：http://hyderabad.quikr.com/Farm-land-and-farm-house-for-sale-near-to-shamshabad-with-red-sandalwood-plantation-W0QQAdIdZ204617570

又一个宣称投资紫檀种植的广告，公司地址仍在海德拉巴。http://www.srinidhihomes.in/ongoing-projects.html

老新闻，2002年的，安德拉邦森林发展公司计划增加紫檀种植规模：http://www.thehindubusinessline.com/2002/08/05/stories/2002080500841300.htm
APFDC plans to raise red sanders as plantation crop
Our Bureau
Despite a ban on exploitation and sale, good quality red sanders fetched any price between Rs 3 lakh and Rs 4 lakh per tonne in the global market.
HYDERABAD, Aug. 4
FOR years red sanders, unique to the forest areas of Cuddapah, Chittoor and Nellore districts in Andhra Pradesh, has been the much sought after wood by illegal traders, who smuggled it to distant lands, especially Japan.
Now through the sustained efforts of the Andhra Pradesh State Forest Department, there is hope of it being raised as a plantation species.
Efforts were on to raise nurseries of this species and promote plantations in the near future, said Dr K. Ramakrishna Rao, General Manger of the Andhra Pradesh Forest Development Corporation (APFDC), under the Forest Department.
Simultaneously, research initiatives are under way to exploit its potential application in soaps, dyes, toys etc. Despite a ban on exploitation and sale, good quality red sanders fetched any price between Rs 3 lakh and Rs 4 lakh per tonne in the global market, while the inferior type was sold as fuel wood like other timbers, he told Business Line.
Red sanders is endemic to only these three districts and is a slow-growing tree. If raised as a plantation crop, the quality of the wood is not often good. Therefore more efforts were needed and the forest department was at it, he said. The demand for red sanders exists in Japan and 40 other countries.
Since regular harvest of red sanders has been banned several years ago, the illegal felling and smuggling have occurred periodically. The State Government's agencies have seized large quantities of wood from smugglers. Such seizures over the past decade have yielded nearly 1,800 tonnes of the material, for which the FDC has been appointed by the State Government as the main selling agent.
The Corporation segregates and sells the material in the global market. Interestingly, Japan alone has procured 200 tonnes in recent times. Red sanders was used in Japan mainly for making musical instruments, he said.
It is estimated that it grows in about 50,000 hectares of forest area in the three districts. With the potential for using red sanders as an important input in the manufacture of agarbathis, as a natural dye (research is even on in Germany and France),and in the toy industry, efforts to make it a plantation crop are, indeed, promising.

楼上有些图片里的木头，如果不是阿三站在边上，说是血檀一点问题没有。
最后一图，安德拉邦某农场里接近成熟的紫檀人工林。估计只有十几二十年的树龄。

另外，印度人写的一篇文章里有如下文字：
Heartwood of Red Sanders has high demand in domestic as well as international market and the wavy grained wood is valued.
There are two types of wood that is popular in trade, one is wavy or ripple grained and the other is straight grained. The wavy grained wood has a huge demand in the international market and is primarily exported to Japan for manufacturing a special musical instrument called as ‘Shamisen’ a three stringed lute used in classical music as the wavy grained wood is supposed to have superior acoustic qualities.
大意是紫檀分波纹和直纹两种，波纹很受欢迎且较贵，大量出口日本制作三味线。

字母兄 小日本那边做琴的料 应该也是人工育种吧。12年能种出优良紫檀 真的很短啊 这个优良紫檀 在印度那边是不是指波纹紫檀 波纹紫檀的价值的确高于顺纹紫檀

网页还好，有图片帮助，看几行字就知道大意。那些PDF文件拿过来才明白自己的英文水平有多烂……
其实外国人把紫檀的生物特性已经研究得非常透彻了，国人很少去检索，找了的也多数看不懂。

科学的玩紫檀 玩明白 如今的紫檀 和历史意义上的檀香紫檀 我们还是要弄明白

英文资料里提及的紫檀木消费者，首当其冲是日本，中国总排在日本后面，有的资料甚者只说日本和南亚本地制药，完全忽略中国。既然很多琴料被认为是质地非常好的紫檀木，那么明清时期的紫檀木应该还是檀香紫檀。
内地包括北京远离热带硬木的产地，也不是进口木材入境之处，所以出现很多臆测说法，而且传得很快。

印度的资料说印度原产的紫檀属植物只有4种，安达曼紫檀、囊状紫檀、印度紫檀和檀香紫檀。比东南亚少，更比非洲少。在印度和斯里兰卡，紫檀木主要用作染料和药材。说到药材，印度人传给藏族人，藏族人又传给蒙古人，成为蒙医的一味药材。

又是一篇很好的资料！其中12年成熟我认为广告成份占多数，而且文中未见农场种植紫檀香所谓成熟的标准是什么，径级多粗心材直径多少等数据，人工种植的紫檀生长速度是基本固定的，多少不会差太多，一推算就知道达到各种标准需要多少年。这些资料很好都可以作为知识储备，同时也需要明确农场种植的紫檀并不是玩材质概念的紫檀

1996年登载于印度某期刊的一篇极好的文章，绝对颠覆很多人的思维习惯！下载全文需要付50印度卢比，不足人民币5块钱，可惜我不知道怎么付钱。
Identification of Wavy Grained Red Sanders (Pterocarpus santalinus) at Nursery Stage
M. S. Rawat , D. P. Uniyal
Abstract
Highly wavy grained wood of Red Sanders fetches fabulous prices in the export market, particularly Japan. While the straight grained or normal grained is sold at a very cheap rate. Hence, to increase the frequency of highly wavy grained trees it is necessary to multiply them for large scale plantations, directly or indirectly. A method has been suggested to identify the highly wavy grained plants at nursery stage.
在育苗期确认波纹紫檀的方法
M. S. Rawat , D. P. Uniyal
波纹明显的紫檀木在国际出口市场上能卖出极好的价钱，特别是卖给日本时，直纹或普通纹理的紫檀卖得很贱。这样，大规模种植紫檀时有必要增加波纹明显的树的比例。我们提出一种在育苗期识别出波纹明显的植株的办法。

有印度学者在1976年就报道了波纹紫檀木所占比例低于1%，并且是遗传因素，而不是生长环境所致，在野生林和人工林中具有同样的比例。
……不用再探讨方便面纹理是什么环境下长出来的了，跟中国人里的自来卷一样，基因所致。

Studies on Variation in Fibre Morphology in Wavy-grained and Straight Grained Trees of Red Sanders
S. Kedharnath , M. S. Rawat
Abstract
Wood samples extracted at breast height from 7 wavy-grained and 3 normal grained trees in red sanders were examined for possible variation in fibre morphology from pith to periphery. The data obtained was analysed by an analysis of variance using the mean values and grouping the trees into two groups of wavy and non-wavy, into three groups of highly wavy, medium wavy and non-wavy and finally without any grouping. The mean value of lumen diameter appeared to be larger in the wavy grained trees as compared to that from normal grained trees and difference between the mean values was found to be very highly significant. This is likely to be a useful character for screening the saplings if it is confirmed after an examination of a larger number of trees.
又一篇付不了卢比的文章，作者好像专门研究紫檀的波纹，发表不止一篇文章。摘要大意是从胸部高度采集了7个波纹和3个直纹的紫檀木样进行研究，波纹木材的平均管孔直径大于直纹的，差别还不小。这个特点也许对树苗的筛选有用处。