纯经济效益

1

结果表明：以20kg/667m2有机生物复合肥作底肥的单位面积产量、产值和纯经济效益最高，其次为40kg/667m2，施用量超过80kg/667m2后，玉米的产量显著下降，产值降低。

The next is 40kg / 667m2 ; When application-rate surpasses 80kg / 667m2 , maize yield drops remarkably and output value reduces .
2

利用文献[9]中的案例进行的实证分析，证明纯经济效益最大化才是互斥方案选优决策的科学准则。

With the demonstrative analysis in article ( 9 ), it proves that pure maximization of economic benefit is the scientific rule of how to select the better in two mutually exclusive schemes .
3

可提高植株的抗倒伏能力，增产10%左右，纯增经济效益35元/667m~2以上。

So , the resisting lodge was increased and the yield was increased by about 10 % . Net benefit was increased by over 35 yuan / 667 m2 .
4

比胶茶纯作提高经济效益40&200%和土地利用率50%以上，解决了劳动就业问题，改善了环境。

The benefits include improving the environment , increasing the economic benefit about 40 % - 200 % , raising the land use rate above 50 % , solving the problem of employment , and so on .