Research on improvement and experiment of 2BYF-6 type stubble no-tillage multi-seeder for rape;

Dynamic model for metering process for pneumatic roller-type vegetable seeder;

Experimental research on 2BYF-6 type no-tillage rape combine seeder in paddy stubble field;

Study on the improvement of water-saving and anti-drought seed-sowing machine;

【Objective】 The study developed a new type of sowing machine that is capable of dividing the fertilizer into seed fertilizer and base fertilizer and laying them into a deeper depth while sowing.

This paper discussed system simulation and reviewed its history development, expatiated its application and study on sowing machine, pointed out the problems in this field.

Design of wheat planter of ridge furrow irrigation;

Design of Rotary Tillage Planter with Double-deck Fertilizer;

Study on permanent raised bed planter;

Some issues of participatory rural technique spreading mechanism were discussed,particularly those in relation to farmers’ economic behavior,cognitive features of techniques,economic condition and system background,ways of technique spreading,social relation structure,and mutual promotion.

We have also discussed the various uncertainties existed in complex supply chain networks,analyzed the spreading mechanism and controlling method of uncertainties in the supply chain.