greenless

与greenless相关的网络例句 [注：此内容来源于网络，仅供参考]

Through field survey and laboratory analysis,the efficiency of the ball fertilizer on greenless recovering of fruit tree leaves,on mineral elements and chlorophyll contents in leaves,as well as fruit yield and apple quality were studied.

用叶绿康球肥在苹果、梨、桃和李树上进行大田对比试验，通过田间调查和室内分析，研究了球肥对果树叶片的复绿效果、对叶内矿质营养元素及叶绿素含量的影响以及对果树的增产效果和改善苹果品质的作用等。