西北农林科技大学：《农业昆虫学》课程教学课件（英文版，2012）Introduction

Agricultural Entomology INTRODUCTION Wu Junxiang &T Li Yping Junxw@nwsuaf.edu.cn yp2003@126.com

1 Agricultural Entomology Agricultural Entomology INTRODUCTION INTRODUCTION Wu Junxiang Junxiang & Li Yiping Junxw@nwsuaf.edu.cn lyp2003@126.com

Lecture outline: Concept of Agri.Ento. >Contents of research on Agri.Ento. Disaster characteristics of agricultural pest insects History of Agri.Ento.home and abroad Main achievements of Agri.Ento.in China >Guidelines of plant protection in China 2

2 Lecture outline: Lecture outline: ¾ Concept of Concept of Agri. Ento. ¾ Contents of research on Contents of research on Agri. Ento. ¾ Disaster characteristics of agricultural pest Disaster characteristics of agricultural pest insects insects ¾ History of History of Agri. Ento. home and abroad . home and abroad ¾ Main achievements of Main achievements of Agri. Ento. in China . in China ¾ Guidelines of plant protection in China Guidelines of plant protection in China

1.Concept of Agri.Entomology *Many pests can damage crops growing in fields. Stored crop grains,harvested after crops are grown,can be damaged by pests. *Pests can mainly be divided into 6 categories: Crop diseases Pest insects Weeds Rats Birds Beasts (e.g.wild boar

3 1. Concept of 1. Concept of Agri. Entomology . Entomology ™Many pests can damage crops growing in fields. Many pests can damage crops growing in fields. ™Stored crop grains, harvested after crops are Stored crop grains, harvested after crops are grown, can be damaged by pests. grown, can be damaged by pests. ™Pests can mainly be divided into 6 categories: Pests can mainly be divided into 6 categories: Crop diseases Pest insects Crop diseases Pest insects Weeds Rats Weeds Rats Birds Beasts (e.g. wild boar Birds Beasts (e.g. wild boar)

How dominant are insects? Butterflies Moths-160,000 Ants Bees-100,000 Flies-90,000 Worms Beetles-350,000 Protozoa Mammals-6,000 Fish Molluscs All Other Insects-100,000 Snails Starfish Other Arthropods 80%of all animals are insects

4 How dominant are insects? How dominant are insects? 80% of all animals are insects 80% of all animals are insects Beetles - 350,000 Butterflies & Moths - 160,000 Ants & Bees - 100,000 All Other Insects - 100,000 Other Arthropods Snails Starfish Molluscs Worms Protozoa Fish Mammals - 6,000 Flies - 90,000

Cotton Boll Borer Helicoverpa armigera Locusts Locusta migratoria 5

5 Cotton Boll Borer Helicoverpa armigera Locusts Locusta migratoria

Small White Butterfly Pieris rapae Wheat Blossom Midge Sitodiplosis mosellana 6

6 Small White Butterfly Pieris rapae Wheat Blossom Midge Sitodiplosis mosellana

Weeds Wheat Rusts

7 Wheat Rusts Weeds

Bird Rats 8

8 Rats Bird

Wild rabbit Wild Boars 9

9 Wild Boars Wild rabbit

Mites Rolly polly bug Slugs Snail 10

10 Mites Rolly polly bug Slugs Snail