In high-yield and high-quality agricultural production, people not only care about production, but also care about the nutritional quality of agricultural products. Among the three elements of fertilizer, NPK, potassium is often referred to as the “quality factor” of crops. Important affect the quality of the formation of reflecting potassium raising crops camp. In practice, often found in crop production due to the potassium deficiency, photosynthesis, respiration, mass transfer, and many enzyme systems function will be adversely affected, not only reduce crop yields, quality of agricultural products will fall.

Scientific research has found that genetic factors play a major role in the potential of quality. The combination of production management and good environmental factors contributes to the maximum potential of quality, but the causal relationship is more complicated. Many studies and evaluations have been done on the relationship between potassium and crop quality at home and abroad . Here is an example of oil crops and high protein crops.

Some people have always thought that the yield of oil crops is positively correlated with the oil content. In fact, this is not the case. There are many factors such as breeding, temperature, moisture and fertilization that can change the oil content, fat composition and protein content of the seeds.

Effect on the protein and oil content of soybean Adding different fertilizers are different, inversely correlated between the soybean seed oil and protein content, oil content will reduce the addition of nitrogen, phosphorus and potassium Adding, the oil content increases.

When a single nitrogen rapeseed increased to a higher level, slightly lower oil content of seeds, but with the increase of Potash, increasing oil content, while balancing Adding most significant effect can be increased nitrogen and potassium menu strain seed oil Yield.

Sunflower sunflower requires a lot of potassium, and it takes about 200 kilograms of potassium to produce one ton of seed . Especially in the sandy loam with low potassium content, the application of potassium fertilizer can significantly increase seed yield, oil content and total oil production. The plot test under irrigation conditions showed that when the nitrogen application rate was constant at 13.4 kg / mu and the potassium application rate was increased from 0 to 14.8 kg / mu, the seed and oil production almost doubled. As the potash fertilizer increases, the size of the sunflower disk and its seeds also increases.

Oil palm and coconut are the major oil-producing plants in the tropics and subtropics. They produce a high amount of oil per hectare. They require a large amount of potassium, but tropical soils contain low levels of potassium. For example, in the south of unsaturated ferro-aluminum, chlorine The optimum annual application rate of potassium is usually 13 to 33 kg / mu. In this range, generally 6 to 14 tons of oil palm ear ( 1.2 to 2.8 tons of oil) can be obtained per 1 ton of potassium chloride applied . When applying the annual amount of potassium per tree increases from 0 to 7 kg of potassium chloride, 15% by weight of palm ear, but the oil content of 2% reduction. It indicates that potassium application has a negative effect on oil content. However, potassium application can increase the amount of oil palm fruit and increase the total oil production.

Coconut trees have stronger ability to obtain potassium and other mineral nutrients from the soil than palm trees, and potassium is also the most effective fertilizer for it. In the Ivory Coast test, 1.5 kg of potassium chloride was applied to each of the 5th- year-old coconut trees , and the copra meat could be increased by 1 time , and the oil production was also increased accordingly.

As can be seen from the above test cases, potassium seems to have the greatest impact on the biosynthesis of oils and fats. The main contribution of potash is to increase production and thus increase oil production per hectare. As for grain and oil crops of fruit yield increased at the same time, it is not necessarily whether to increase oil content. This inference is more misleading, especially when nitrogen is applied in large quantities, because protein content and oil content are usually negatively correlated. Moreover, the effect of potassium fertilizer on fatty acid composition is less than that produced by genetic attributes .

High-protein crops require more potassium than normal crops, such as about 22.7 kilograms of potassium removed from the soil for every ton of harvest . These crops have three common characteristics : 1. High protein yield. The potassium content in the crop is highly positively correlated with the protein content. Not only does the grain contain high concentrations of potassium, but most of the potassium is bound to the protein, so high protein crops have a higher potassium harvest index (potassium in the harvest). number). The reason is that such crops can more efficiently transfer potassium into the developing seed, and potassium participates in the transport of nitrogen in protein synthesis. 2. Potassium is beneficial to the stability of protein structure. Most of the storage proteins in the seeds are rich in acidic amino acids such as glutamic acid and aspartic acid. Potassium balances these two anionic amino acids. 3. The effect of high concentration of potassium can also promote the activity of protein synthesis organs.