1. Up to now, five new series of pollution-free cultivation techniques have been published, namely, pollution-free cultivation techniques for bean vegetables, melon vegetables, eggplant vegetables, rice, and characteristic sweet potato. These books are all aimed at a single crop, and the authors are all workers engaged in agricultural technology extension. They use the language that farmers are willing to accept in the expression of the book content, and rarely or not introduce "why", but focus on "how to do it". The price of each book is below 10 yuan, which really makes the notebook cheap, affordable and easy to use.

2. At present, every book has been reprinted, and the pollution-free cultivation techniques of bean vegetables, melon vegetables and eggplant fruits have been included in the purchasing catalogue of "farmer's bookstore" in Hunan Province in 2009. Pollution-free and efficient cultivation techniques of rice were recommended by the State Press and Publication Administration as the catalogue of 20 10 "farmer's bookstore".