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What kind of soil conditions do peanuts need for high yields?
(1) Deep full soil layer. For a high-yield field, the full soil layer should be more than 50 cm deep. 99% of the peanut root system is distributed within 50 cm, while the main root reaches deep, more than 1 m down, so a deep soil is very important for the growth and development of the peanut root system. (2) Loose and active cultivated layer. A thickness of 30 cm is the loose, active and fertile cultivated layer, and...
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What kind of soil standards do high-yield rice require?
(1) Distinct profile horizons, deep plough layer, good texture. For high-yield rice, a plough layer depth of about 20 cm is best. The plough layer should be fertile, thick and soft, with a high aggregate content, good structure and aeration, and suitable tillage properties. If the plough layer is too shallow, rice roots develop poorly; if too deep, floating mud forms easily, which is unfavourable for rice rooting and early growth. The texture should be moderate, neither too sandy nor too clayey: when dry-ploughed, the plough does not turn up large clods and the soil breaks up easily under harrowing; when wet-ploughed, it does not settle into a hard pan; when drained and dried, it does not crack widely, and the cracks close up easily after re-flooding.(2) Organic
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