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印度的土壤缺锌已引起了人们的广泛重视(见本期第38页——编者)。现已知道,土壤缺锌的临界值随作物及土壤的不同而变化,此变化与作物对锌胁迫的敏感程度有关。即使同一作物,缺锌的临界值也因土壤不同而有差
Zinc deficiency in the soil of India has drawn much attention (see page 38 of this issue - Editor’s Note). It is now known that the critical value of zinc deficiency in soils varies with crop and soil, and this change is related to the sensitivity of crops to zinc stress. Even for the same crop, the threshold for zinc deficiency varies from soil to soil