किसका उपयोग मिट्टी की लवणत – McqOptions

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1.	किसका उपयोग मिट्टी की लवणता एवं क्षरीयता की समस्या का दीर्घकालीन हल है -
A.	राक-फास्फेट
B.	जिप्सम
C.	खाद
D.	यूरिया
Answer» C. खाद

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