日常生活(huo)中常常提到抗(kang)紫(zi)(zi)外(wai)(wai)線(xian)塑(su)膠原料,抗(kang)紫(zi)(zi)外(wai)(wai)線(xian)PP,抗(kang)紫(zi)(zi)外(wai)(wai)線(xian)PC,抗(kang)紫(zi)(zi)外(wai)(wai)線(xian)ABS等一(yi)系列(lie)抗(kang)紫(zi)(zi)外(wai)(wai)線(xian)塑(su)膠原料,紫(zi)(zi)外(wai)(wai)線(xian)會容易(yi)讓一(yi)些塑(su)膠產品快速老(lao)化,可許多植物(wu)卻離不開紫(zi)(zi)外(wai)(wai)線(xian).

    由(you)于(yu)紫(zi)外線(xian)的缺乏，許多動植物(wu)都會發生變化。例如：蜜蜂不能采蜜、某(mou)些(xie)植物(wu)徒(tu)長，茄(qie)子和鮮花的顏(yan)色改變等(deng)。這些(xie)發現限(xian)制了完全遮蔽(bi)紫(zi)外線(xian)塑料薄膜的應用(yong)。但人們自然(ran)會想到，完全遮蔽(bi)紫(zi)外線(xian)對某(mou)些(xie)農作物(wu)是否(fou)有良好(hao)的積極作用(yong)呢?經(jing)近(jin)年來(lai)的研究證實，遮蔽(bi)紫(zi)外線(xian)至少有三大用(yong)處：

(1)減少病蟲害。

(2)防止樹木(mu)老化，延長樹木(mu)壽命。

(3)改變植物(wu)形態，提高許多作(zuo)物(wu)的質量(liang)。

    這種應用(yong)(yong)在以(yi)前是不(bu)可(ke)思(si)議(yi)的(de)(de)，因(yin)為紫(zi)(zi)(zi)外(wai)線(xian)(xian)能殺(sha)菌(jun)(jun)，遮蔽紫(zi)(zi)(zi)外(wai)線(xian)(xian)是不(bu)是引起(qi)病(bing)菌(jun)(jun)繁(fan)(fan)(fan)殖(zhi)(zhi)呢?其實不(bu)然(ran)，因(yin)為植(zhi)物(wu)(wu)(wu)是在長(chang)期紫(zi)(zi)(zi)外(wai)線(xian)(xian)照射下生(sheng)(sheng)長(chang)的(de)(de)，故引起(qi)植(zhi)物(wu)(wu)(wu)生(sheng)(sheng)病(bing)的(de)(de)霉菌(jun)(jun)，桿狀(zhuang)細菌(jun)(jun)和病(bing)毒等(deng)都是具有一定抗(kang)(kang)紫(zi)(zi)(zi)外(wai)線(xian)(xian)能力的(de)(de)微(wei)(wei)生(sheng)(sheng)物(wu)(wu)(wu)，它們在紫(zi)(zi)(zi)外(wai)線(xian)(xian)的(de)(de)作用(yong)(yong)下能大(da)量繁(fan)(fan)(fan)殖(zhi)(zhi)，因(yin)為紫(zi)(zi)(zi)外(wai)線(xian)(xian)殺(sha)死了大(da)量不(bu)能抵抗(kang)(kang)紫(zi)(zi)(zi)外(wai)線(xian)(xian)但對植(zhi)物(wu)(wu)(wu)無害(hai)的(de)(de)微(wei)(wei)生(sheng)(sheng)物(wu)(wu)(wu)。如果農用(yong)(yong)薄膜遮蓋了紫(zi)(zi)(zi)外(wai)線(xian)(xian)，則大(da)多數不(bu)能抵抗(kang)(kang)紫(zi)(zi)(zi)外(wai)線(xian)(xian)但對活著(zhu)的(de)(de)植(zhi)物(wu)(wu)(wu)無害(hai)的(de)(de)微(wei)(wei)生(sheng)(sheng)物(wu)(wu)(wu)就(jiu)會(hui)大(da)量繁(fan)(fan)(fan)殖(zhi)(zhi)，從而(er)抑制植(zhi)物(wu)(wu)(wu)致(zhi)病(bing)的(de)(de)微(wei)(wei)生(sheng)(sheng)物(wu)(wu)(wu)的(de)(de)繁(fan)(fan)(fan)殖(zhi)(zhi)，因(yin)此作物(wu)(wu)(wu)的(de)(de)病(bing)害(hai)就(jiu)會(hui)大(da)量減少(shao)，產量也(ye)會(hui)上升。沒有紫(zi)(zi)(zi)外(wai)線(xian)(xian)害(hai)蟲(chong)(chong)也(ye)難以(yi)生(sheng)(sheng)長(chang)繁(fan)(fan)(fan)殖(zhi)(zhi)，而(er)有些病(bing)毒是以(yi)害(hai)蟲(chong)(chong)為媒介的(de)(de)，因(yin)此這些病(bing)害(hai)也(ye)就(jiu)可(ke)以(yi)避免了。

    用(yong)(yong)農(nong)膜防治病(bing)蟲(chong)害成本(ben)不(bu)高，勞力也花費不(bu)多，又(you)能避免(mian)化(hua)學農(nong)藥(yao)的環境(jing)污染，不(bu)在(zai)農(nong)產食品中(zhong)(zhong)留有(you)農(nong)藥(yao)殘(can)毒，因此近年來已得到迅速的!應用(yong)(yong)和(he)推(tui)廣(guang)，適用(yong)(yong)的作物品種正在(zai)不(bu)斷增加中(zhong)(zhong)。

    適(shi)用(yong)防治的病(bing)(bing)害有：稻瘟病(bing)(bing)、立枯病(bing)(bing)、灰霉病(bing)(bing)、斑點細菌病(bing)(bing)，腐(fu)敗癥和軟(ruan)腐(fu)病(bing)(bing)等。蟲(chong)害有蚜蟲(chong)病(bing)(bing)等。

    此外，抗紫外線農(nong)膜可改(gai)變植物形(xing)(xing)態(tai)，提高(gao)質量，例(li)如使水果甜度增加，鮮花形(xing)(xing)態(tai)改(gai)善、防止圓辣椒的(de)老(lao)化等。