The main factors: Plough (A) 4, consisting of 3 disc Harrow plough (usually County) in conjunction with the County to loosen 1 before planting, fertilizer and plough to loosen another 1 before planting pineapple (A1), chisel plough (County Board picked) in conjunction with the County to loosen 2 times before planting, fertilizer, sod. (A2), chisel plough (County Board picked) in conjunction with the County to loosen 1 before planting, fertilizer and do not want to extort to loosen before planting pineapple (A3) (3 disc Harrow plough plough recording information is collected:
.1. soil samples were collected before and after the soil to loosen pineapple plant plough for soil physical and chemical properties of Vaseline.
2. Keep track of the growth of pineapple by measuring the length of a (D-leaf), the quantity of nitrogen phosphorus and potassium in the pulp at the age of 4 months and 6 months
3.
Pineapple crossbred
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