During the vegetative growth period, due to high temperature, dense sowing, weak seedlings, aging, close-planting, late planting, poor survival, lack of nitrogen, etc., leaf reduction may occur, so that young ear differentiation advances one leaf, resulting in rice leaf reduction.
The methods for diagnosing leaf loss were: 11 leaf cultivars were 7-8 leaf years old (12 leaf cultivars were 8-9 leaf years old). Samples were taken at 10 different sites throughout the field for several days. Each site took 2 or 3 main stems. Peel out the growing point, if you see the growth point has become young ears, the emergence of armpit hair can be determined to reduce the leaf. 11 leaf cultivars were from 7 to 8 leaf-age (12 leaf cultivars were from 8 to 9 leaf-age) and were sampled at 10 different sites throughout the field for several days. Each site took 2 to 3 stripping growth points of the main stem. See The growing point has become young ears, and the emergence of hair can determine the reduction of leaves.
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