The Spreading Developing And Its Laws Of The Crops In The Feudal Times

The article is on the quoting, planting, spreading, developing of the crops in the feudal times. During the feudal times, the spreading and developing of crops made a magnificent adchievement under the special surroundings and also by the comprehensive efforts of population.Science and technology, commercing, the, governments ' policy and the peoples ' thought.but on the other hand, it also brought some social and surrounding problems. If we study the laws of the crops spreading and the problem which it brought.We can be better to develop our modern agriculture.Firstly, I study the spreading of the main crops,and then I analysis the influence of the main factors on the spreading of the crops,moreover,Idiscuss the lessens which we can the learn from it and the interflowing of the domestic and abroad crops.At the end of the article.I conclude the features of this spreading.lt is social influence and the meaning to our modern agriculture.