China would face the problem that the foundation would be broken by the trend that quantity of farmland constantly became more little than ever,the productivity of it and the benefit of planting foods was low,as a result of industrialization and urbanization.

Surveys on alfalfa irrigation and economic benefit to farmers in water resource scarcity condition of Yongchang County;

Under the condition of market economy, employment target should be summarized as “Be active and independent in employment, gain various benefits, achieve social equity and accelerate full employment”.