Sustainable agriculture：练习题

In semi-arid regions, which strategy for sustainable agriculture specifically aims to reduce water waste while also preventing the build-up of salts (salinisation) in the topsoil?

How does managed grazing (livestock rotation) contribute to sustainable agriculture compared to continuous grazing?

How does the integration of pest resistant varieties of crops support the goals of sustainable agriculture regarding local biodiversity?

Evaluate why trickle drip irrigation is considered a more sustainable agricultural practice than flood irrigation in arid environments.

Sustainable agriculture aims to maintain soil health while ensuring food security.
(a) Describe the practice of crop rotation.
(b) Explain two environmental benefits of using organic fertilisers (such as manure) instead of synthetic chemical fertilisers.

Modern sustainable farming often utilizes advanced technology and biological methods.
(a) Explain how the use of pest-resistant varieties of crops can improve the sustainability of a farm.
(b) Describe the mechanism of trickle drip irrigation and explain why it is a more sustainable choice for water conservation than overhead sprinklers.