৪৯তম বিসিএস ⎯ কৃষিবিজ্ঞান [৮০১]১টি পরীক্ষায় এসেছেপ্রশ্ন ১What is the main advantage of subsurface irrigation in terms of water usage?কIt requires more water than other methods.খIt minimizes evaporation losses.গIt increases deep percolation.ঘIt only works with a high-pressure water source.উত্তর দেখুন