As shown in Table 4 , the AKP/ALP activity in the treatment with a 2-day spraying frequency was greater than that in the treatment without silicon fertilizer under different cycling irrigation modes, although their difference did not reach statistical significance.
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Contribution of silicon fertilizer to soil and growth of Pak choi under reclaimed and brackish water cycling irrigation.
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The sentences
In addition, when the silicon fertilizer spraying frequency was constant, soil moisture exhibited a decreasing trend as the cycling irrigation time of reclaimed water increased, and no notable difference occurred between treatments when the spraying frequency was 2 days.