Standard test method for measuring the light penetration of a turf reinforcement mat 測(cè)量泥碳鋼筋網(wǎng)光穿透性的標(biāo)準(zhǔn)試驗(yàn)方法
The lamp shade adopts pyrex with good light penetration and less penetration loss 玻璃罩材料為耐熱玻璃,透光性能好,透射損失小。
Black and white - on - black mulches greatly reduce light penetration , thereby preventing most weed growth 黑色和黑白相間的塑料薄膜覆蓋可以顯著減少光的入射,從而防止大多數(shù)雜草的滋生。
From trial of different density and collocate , it can be known that planting with narrow line and proper density can improve light penetration of soy bean colony and space distribution and has a better canopy structure , enhance colony solar utilize rate , thereby , increases soy bean colony productive ability and gains a higher yield 摘要通過不同密度和寬、窄行距配置試驗(yàn)可知,大豆在保持合理群體密度下,實(shí)行窄行密植,可改善大豆植株群體的透光性和葉面積的空間分布,具有較好的冠層結(jié)構(gòu),提高了群體光能利用率,從而提高大豆的群體生產(chǎn)能力,獲得較高的產(chǎn)量。