Cotton should pay attention to foliar fertilizer
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The growth period of cotton is long, the demand for nutrients is large, and the root function is obviously reduced at the later stage, but the leaf surface is larger and the function of fertilizer absorption is stronger. The foliar spray fertilizer has a significant effect on increasing yield.
Spraying nitrogen fertilizer to prevent premature aging: From late August to early September, spray with 1% urea solution, 40-50 kg per mu, spray once every 7 days, even spray 2-3 times to promote photosynthesis and prevent premature aging.
Spraying phosphorus to promote early maturity: From the end of August, use 1 kg of superphosphate and 50 kg of water. After the solution, take the filtrate, spray 50 kg per acre, once every 7 days, even spray 2-3 times, which can promote the seeds to be full. Increase the weight of the bell and prematurely vomit.
Spraying boron fertilizer to attack large peach: Generally, it is sprayed with one thousandth of boric acid aqueous solution from the bell period, 50 kg per mu, once every 7 days, even spraying 2-3 times, which is beneficial to many peaches and big peaches.
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