In 2019, it showed a trend of decline before the first irrigation, fluctuation in the middle stage and decline in the later stage.
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Effects of plastic film mulching on the spatiotemporal distribution of soil water, temperature, and photosynthetic active radiation in a cotton field.
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The sentences
With cotton growth, the difference in water content displayed an increasing trend and reached a maximum in the boll opening stage, which was approximately 0.01−0.15 m 3 /m 3 .