题目内容
(请给出正确答案)
[单选题]
若植物鲜重为100g,10%是干物重,其中氮、磷、钾的含量分别为4%,0.5%,2%;植株对肥料的利用率分别为20%,10%,20%,则应该施如入土壤中的三要素的量分别为()g
A.0.4,0.05,0.2
B.4.0,0.5,2.0
C.2.0,0.5,1.0
D.10,2.5,1
答案
C、2.0,0.5,1.0
如果结果不匹配,请 联系老师 获取答案
A.0.4,0.05,0.2
B.4.0,0.5,2.0
C.2.0,0.5,1.0
D.10,2.5,1
C、2.0,0.5,1.0
A.500N
B.1000N
C.1500N
D.2000N
A.水重=100×6%=6g
B.水重=(100-6)×6%=5.6g
C.水重=6/(1+6%)=5.7g
D.水重=(100+6)×6%=6.36g