zhang shao sheng liu guo (5 risultati)

paperback. Condizione: New. Language:Chinese.Pages Number: 118 Publisher: Fujian Science and Technology Pub. Date :2007-04-01 version 1. Contents: First. the vegetables difficult diagnostic techniques and pollution prevention and control of disease diagnostic techniques pollution prevention techniques 1. Health and epidemic prevention three off 2. Fitness cultivation strict three 3. Agents to prevent the three fitness Second. clubroot Diagnosis Case 1. Cauliflower clubroot 2. Cabbage root swelling and pain 3. Mustard cl.

paperback. Condizione: New. Language:Chinese.Pages Number: 74 Publisher: Fujian Science and Technology Pub. Date :2009-02-01 1 edition of China referred to Cymbidium orchids or orchids. the main species are Chunlan. petals blue. spring sword. Cymbidium. Cymbidium. Cymbidium. cold Lan. Lan Hua Hua Zi elegant. quiet fragrance. for our important traditional ornamental plants. Orchids in the cultivation process. would be subjected to a variety of pests against light by reducing its ornamental and economic value. in serious .

paperback. Condizione: New. Paperback. Pub Date: 2021-04-01 Pages: 256 Language: Chinese Publisher: Fujian Science and Technology Press This book is divided into three parts: diagnosis and treatment of fruit tree diseases and insect pests. disease and insect pests.?Diagnosis and treatment basis introduces the types of fruit tree diseases and insect pests. epidemic characteristics and laws. diagnosis essentials. control strategies and measures; the diseases are classified according to the types of fruit tree diseases. an.

paperback. Condizione: New. Language:Chinese.Paperback. Pub Date: 2019-06-01 Pages: 150 Publisher: Fujian Science and Technology Press flowers often occur during the growth of a number of diseases and pests. reducing the ornamental value and economic value flowers. causing heavy economic losses. Diversity and complexity of flowers kinds of pests conditions occur. to accurately diagnose diseases and insect pests caused great difficulties. and accurate diagnosis is effective .

Hardcover. Condizione: New. HardCover.Pub Date:2021-08-01 Pages:578 Language:Chinese Publisher:Fujian Science and Technology Publishing House The main line of control. the content covers the morphology. classification and identification. research methods of crop pathogenic nematodes. the development and utilization of nematode biocontrol agents. etc. It also covers the diagnosis. ecology. microecology. epidemiology. and Principles of prevention and control: The diagnosis and prevention and control technology of nematode.