मृदा की उर्वरा शक्ति को बन� – McqOptions

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1.	मृदा की उर्वरा शक्ति को बनाये रखने के लिए कौनसी खाद प्रयुक्त की जाती है ?
A.	यूरिया
B.	गोबर व हरी खाद
C.	खली खाद
D.	अमोनियम सल्फेट
Answer» C. खली खाद

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