{x+y = 200, reason: the length of rectangular land is 200m.

{(x100a): (y1001.5a) = 3.4 reason: total output = area × output per unit area. Let the yield per unit area of A be A, because the ratio of yield per unit area of A and B crops is 1: 1.5, so the yield per unit area of B is1.5a. The total output of A crops is X 100 A, and that of B crops is Y100/kloc.

Solution:

{x= 106

{y=94

Thinking in the same way as the scheme 1 leads to the equation:

{x + y = 200

{(x 200 a ):( y 200 1.5a) = 3:4

solve

X is about 53 degrees

Y is about 47

So this planting scheme is as follows:

Crossing the short side of rectangular land at a distance of about 53 meters from one end, the land is divided into two rectangles, the larger one is planted with crops A, and the smaller one is planted with crops B. ..