求翻译：第五部分针对国债投资存在的问题给出相关的建议。具体包括控制国债投资规模，完善国债投资监管机制；增大国债对“三农”倾斜力度，全面提高农民收入；利用国债政策促进我国产业结构调整和提高；国债政策和其它宏观经济政策相结合是什么意思？

Part V of the problems are given for bond investment related proposals. Including control the scale of investment in bonds, and improve the regulatory mechanism of bond investment; increase the national debt on the "three rural" tilt the intensity increase farmers' income; Treasury policies to promo

Part 5 of the investment in bonds exists in response to a question of related recommendations. includes a specific control investment in bonds, perfect size; increased investment in bonds bonds regulatory mechanism of "3 " tilt intensity farming and raising the income of farmers, government bonds; u

The fifth part gives the correlation in view of the national debt investment existence question the suggestion.Includes the control national debt investment scale specifically, perfect national debt investment supervising and managing mechanism; Increases the national debt to “three agriculture” inc

Part v for investment related to the problems of giving advice. Includes controlling investment scale, improve the investment regulatory mechanisms; increases the bonds on "three agricultures" inclined to improve farmers ' income; the use of Treasury policies promote the adjustment of China's indust