问题：激素类除草剂不能与哪些除草剂混用？...

Friday, July 26, 2024

问题：常见杂草...

Tuesday, January 16, 2024

问题：在杂草生物防治中应如何引进天敌？（原则）...

Wednesday, May 14, 2025

问题：原生休眠...

Wednesday, November 20, 2024

问题：影响杂草发生深度的因素有哪些？...

Monday, April 22, 2024

问题：根据发生时期将杂草分为哪几类？...

Wednesday, May 14, 2025

问题：杂草群落...

Wednesday, July 3, 2024

问题：秋熟旱作田发生的禾本科杂草主要有哪些？...

Monday, September 12, 2022

问题：稻田发生的雨久花科杂草主要有哪些？...

Monday, April 22, 2024

问题：他感作用（又叫化感作用）...

Monday, April 22, 2024

问题：影响杂草发生深度的因素有哪些？...

Saturday, January 11, 2025

问题：杂草的分类方法是什么？...

Monday, December 2, 2024

问题：杂草群落的演替...

Saturday, January 11, 2025

问题：根据形态学杂草如何分类？...

Saturday, January 11, 2025

问题：试述杂草科学存在的问题和对策...

Tuesday, November 28, 2023

问题：按化学结构分类，阿特拉津属于哪一类，这一类除草剂有哪些共性？...

Friday, May 24, 2024

问题：下列杂草中不属于阔叶杂草的的是（）。A、千金子B、节节菜C、凤眼莲D、荠菜...

Friday, January 12, 2024

问题：简述除草剂时差选择性的原理？...

Sunday, May 4, 2025

问题：果园常见菊科杂草主要有哪些？...

Thursday, September 15, 2022

问题：寄生性杂草...

Sunday, August 4, 2024