Application of nitrogen fertilizer to ginger
Ginger application of nitrogen fertilizer technology Ginger is China's export of important seasoning vegetable varieties. According to the rules of fat absorption by ginger, “reasonable fertilization can greatly increase yield and improve quality. The biological and economic yields of ginger are high, and the amount of fertilizer required is large. In addition to the need for sufficient phosphorus and potassium fertilizers, the application of nitrogen fertilizer is also very important. Ginger is an important seasoning vegetable variety for China's export earnings, and according to the law of fat absorption by ginger, “reasonable fertilization can greatly increase yield and improve quality. Ginger's biological production and economic output are very high, requiring a large amount of fertilizer, in addition to the need for adequate phosphorus and potassium fertilizer, the application of nitrogen fertilizer is also very important. According to the research of the Department of Horticulture, Shandong Agricultural University, ginger is applied with 100 kg of calcium phosphate and 50 kg of potassium sulfate per 667 square meters (mu), and then applied with 40 kg of nitrogen fertilizer. Compared with ginger without nitrogen fertilizer, the leaf chlorophyll content is increased by 34%. %-96%, leaf nitrogen content increased by 10% -30%, nitrate reductase activity increased "16% -80%, leaf photosynthetic rate increased by 18% - 57%. Ginger yield can increase 47.37% -66.82%. In addition, the application of nitrogen fertilizer can also improve the quality of ginger, test results show that after the application of nitrogen fertilizer, ginger content increased by 8% -11%, protein content increased by 23% -32%, volatile oil increased by 7.7% - -23%, Soluble sugars decreased by 12% to 14%, and cellulose decreased by 15% to 23%. The results also showed that the effects of different nitrogen fertilizer cultivars were different. The effect of sodium nitrate on ginger growth at seedling stage was greater than that of ammonium nitrate, urea and carbonic acid. Ammonium hydride, however, has less effect on growth and growth, and the growth of ginger is not as good as that of other nitrogen fertilizers.The effect of different nitrogen fertilizers on the growth of ginger is ammonium bicarbonate, followed by ammonium nitrate and urea again. Increased production is not as good as other nitrogen fertilizers The effect of nitrogen fertilizer on the increase of volatile oil and starch content of ginger and the decrease of cellulose content is not as good as that of other nitrogen fertilizers, and the content of protein is the highest when ammonium bicarbonate is used, and the economic coefficient is also the highest when ammonium bicarbonate is used. In order to obtain high yield and high quality, it is necessary to pay attention to the application of nitrogen fertilizer on the basis of the application of phosphorus and potash fertilizer. Generally, 30--40 kg of nitrogen fertilizer is applied per 667 square meters, and ammonium bicarbonate or ammonium nitrate is preferred for nitrogen fertilizer. To promote early growth of ginger seedlings, appropriate application of sodium nitrate (approx. 20% of the total amount of fertilizer) can be applied to phosphorus and potassium base fertilizers, and other nitrogen fertilizers can be applied at different fertility stages (Xiong Enrong) from “New Agricultureâ€, Issue 2, 2001 According to the research of the Department of Horticulture, Shandong Agricultural University, ginger is applied with 100 kg of calcium phosphate and 50 kg of potassium sulfate per 667 square meters (mu), and then applied with 40 kg of nitrogen fertilizer. Compared with ginger without nitrogen fertilizer, the leaf chlorophyll content is increased by 34%. %-96%, leaf nitrogen content increased by 10% -30%, nitrate reductase activity increased "16% -80%, leaf photosynthetic rate increased by 18% -57%. Ginger production can increase 47.37% -66.82%. In addition, the application of nitrogen fertilizer can also improve the quality of ginger, the test results show that after the application of nitrogen fertilizer, ginger content increased by 8% -11%, protein content increased by 23% -32%, volatile oil increased by 7.7% -23%, soluble Sugar decreased by 12%-14%, and cellulose decreased by 15%-23%. The results also show that the effects of different nitrogen fertilizers are different. The effect of sodium nitrate on ginger growth at seedling stage is greater than that of ammonium nitrate, urea, and ammonium bicarbonate, but it has less effect on growth and growth, and the growth of ginger is not as good as Other nitrogen fertilizer varieties. The effect of different nitrogen fertilizers on ginger production was highest with ammonium bicarbonate, followed by ammonium nitrate and urea again. The increase in sodium nitrate is not as good as that of other nitrogen fertilizers. Nitrogen fertilizer can increase the volatile oil and starch content of ginger. The effect of reducing the cellulose content is that sodium nitrate is not as good as several other nitrogen fertilizers. The content of protein is the highest with ammonium bicarbonate, and the economic coefficient is also the highest with ammonium bicarbonate. In summary, in order to obtain high yield and high quality, it is necessary to pay attention to the application of nitrogen fertilizer on the basis of the application of phosphorus and potash fertilizer. Normally, 30-40 kg of nitrogen fertilizer is applied per 667 square meters, and ammonium bicarbonate or ammonium nitrate is preferred for nitrogen fertilizer. In order to promote the early growth of ginger seedlings, sodium nitrate (about 20% of the total fertilization amount) can be applied in the application of phosphorus and potassium base fertilizers, and other nitrogen fertilizers can be applied at different growth stages.