Potassium is a quality element. It participates in all biochemical reactions in plants, enhances the ability of strong stalks to prevent lodging, increases grain weight, and improves the quality of agricultural products. Generally, it can increase crop yield by 10% to 20%. Boron is an irritating element, mainly affecting the development of plant reproductive organs such as pollen and pollen tubes. After boron application, it will promote the normal development of plant meristems, make reproductive growth normal, and benefit reproductive organs. Normal formation, so generally increase crop yields by more than 10%. According to the test, the application of potassium and boron on the basis of nitrogen and phosphorus application, compared with the single application of potassium or single application of boron in the same case, has obvious advantages in increasing yield for any crop, and the yield increase is over 5% to 8%, especially For the rapeseed and other potassium-loving and boron-loving crops, the yield-increasing advantage is even more obvious, and can be as high as 12% or more.
The application of potassium and boron supplementation to crops should generally be carried out on the basis of the application of nitrogen and phosphorus fertilizers. The method is as follows: First, it is applied as a base fertilizer, that is, on the basis of applying nitrogen fertilizer and phosphate fertilizer, 10-15 kg of potassium fertilizer and 0.5-1 kg of boron fertilizer are applied per mu. The second is for topdressing application, that is, in the transition period of crop growth, 3 to 5 kg of potassium fertilizer is applied per mu, 0.2 to 0.25 kg of boron fertilizer per mu, and 40 to 50 kg of water is sprayed on the leaves.
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