试题与答案

管理不善的玉米地里杂草丛生,会影响玉米的产量,这主要是因为 A.杂草与玉米互利共

题型:选择题

题目:

管理不善的玉米地里杂草丛生,会影响玉米的产量,这主要是因为

A.杂草与玉米互利共生的结果

B.杂草寄生在玉米上影响玉米生长

C.杂草使玉米的品质受到影响

D.杂草和玉米争夺生活条件的结果

答案:

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