第1474节 纯正鸡蛋人戴维先生(二)(1 / 2)

原来风沙肆虐,沙把草苗给掩盖,树被狂风连根拔掉,刮得无影无踪,就会前功尽废!

当地人说起来都是摇头,说根本不可能阻止得了厉害的风沙!

是吗?

真要不行,就来沙漠硬底化,用水泥把沙漠都遮盖起来,看我们水泥利害还是风沙厉害。

当然也不至于这么凶恶,戴维先生即时想出了办法,那就是做起草方格,先把沙丘控制起来。

草方格,是为用捆扎的干草铺开来,在地下打桩生根,固定住之后,再开始以此为出发点,向方格内的范围逐步推进,干草树枝捆扎在一起,先挡住风、固住流沙,层层设防,栽一片巩固一片,逐步向前推进。从此,草种树苗再也没被风刮跑过。

再选用合适的植物,比如引进了沙柳,这玩意儿好,纤细的枝条、嫩绿娇小的绿叶,仿佛风一吹就能折断,但一株株看似柔弱的沙柳却筑起了抗击风沙的一道道坚韧防线。

沙柳形如火炬,较耐旱,喜水湿;抗风沙,耐一定盐碱,耐严寒和酷热,具有“干旱旱不死、牛羊啃不死、刀斧砍不死、沙土埋不死、水涝淹不死”的“五不死”特性。加上它成活率高,适应性强,是固沙绿化的不二之选。

它们长于地面三四米高,扎于地下却像网一样寻求养分向四处延伸,根系非常发达,最远能够延伸到100多米,一株沙柳就可将周围流动的沙漠牢牢固住。

沙柳这种沙生灌木还能像割韭菜一样,具有“平茬复壮”的生物习性。

人们用刀齐根砍下这些沙柳,再切成七八十厘米就成了新苗了。

这时,砍过的沙柳并没有死,等待来年春天就能继续发芽生长。三年成材,越砍越旺,这是沙柳的本性。可是,如果不去砍掉长成的枝干,到不了7年,它们就会因为养料和水分供应不足,成为枯枝直至死亡。

因为长得太旺了!

只要让它们成长起来,它们就会发挥巨大的作用。

开始的时候让它们活并不难,因为近着尼罗河,有水可用!

华人修建了一条条的水泥管,建立了密如蜘蛛网的他们有着高超的技能,还建造了一座座抽水的水车、风车,利用风的动力把水引到高处,再放水下来,灌溉沙柳与其它植物。

如同东方带来的魔力,风车、水车都巨大无比,被风驱动着,日夜不停地把尼罗河的水给抽取上来,通过一条条不透水的水泥渠管,进入了沙漠地带,多余的水甚至形成了小湖泊。

沙漠容易漏水,聪明的中国人干脆把沙子搬开,其下水泥打底,水就跑不了了!

工程量非常大,但功夫不负苦心人,形成了小湖泊后,自然环境改善,芦苇丛长起来了,人们养鱼,种莲花又有好的收获!

有了水,于是一种接一种的的草苗树种都齐活了,它们成长起来,构成了沙漠中的“绿原”,“绿原”内流水潺潺,绿洲相连,林带中住着野兔、小鸟等动物,生机盈然,与旁边的黄沙遍地形成了鲜明的对比。

“还有野兔、小鸟?”有人奇道:“广东人不把它们统统干掉?”

戴维先生应了一句话,得到了满堂喝彩是:“虎毒不食子!”

大家即时明白了,辛辛苦苦得来的绿原,飞鸟走兽过来安家,实在不容易,不能杀它们!

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