[求助]OG11th SC53题

When Congress reconvenes,some newly elected members from rural states will try and establish tighter restrictions for the amount of grain farmers are to be allowed to grow and to encourage more aggressive sales of United States farm products overseas.

The answer is:to establish tighter restrictions on the amount of grain farmers will be allowed to grow and to encourage
        

不理解，出现will try 和will be 又没有连接词，求大牛指教！