In 2003, the Agricultural Products Quality Supervision and Inspection Center of the Ministry of Agriculture tested the castor cake, which contained 7.5% of nitrogen, 2.25% of phosphorus, 6.96% of potassium, 2.58% of soluble sugar, 7.0% of ash, 1490 mg of iron per kg, 93.5 mg of copper, Zinc 107 mg, manganese 52.8 mg. This shows that the castor bean cake contains not only higher nitrogen, phosphorus and potassium but also organic fertilizers with sufficient trace elements. The content of iron and soluble sugar is high. In southern Liaoning, the amount of iron in the soil is very small. The application of castor bean cake fertilizer can make up for the lack of iron in the soil and increase the content of sugar in the soil solution, thus increasing the sweetness of the watermelon. In 2003, we used large amounts of ricinus cake for a total of 10 tons in watermelon cultivation. As a result, any melon farmer who applied castor bean cake had better economic benefits. In Xihu Village, Boruobao Town, Guinong Dujin recorded a good income of 4,400 yuan in 667 square meters. His specific approach is as follows. 1. Select the right road variety Shenyang Xinfu No. 9, with dark red pulp, high sweetness, early ripeness, thin skin, and resistance to transportation. There are very few cold glutinous rice dumplings and medlar-free melon melon melons. 28-32 days after flowering, it is very popular in the market. Sowing on February 2, grafted seedlings, the use of plug survival rate is high. Each person can graft 1,000 strains per day. 2. Use castor cake as base fertilizer to apply 130 kg of castor bean cake per 667 square meters, apply 2 bags of compound fertilizer and 4 sets of chicken manure, fertilize 3 times with water. The method of application of castor cake: it is placed on a plastic sheet and sprinkled with water to make it moist, and then it is wrapped in a plastic sheet and stuffed overnight. Cake fat naturally loose, and then mixed with other organic fertilizers and inorganic fertilizers applied in the watermelon planting ditch. In doing so, it can meet the various nutrients needed for the growth and development of watermelon. 3, field management early planting at the right time, the best temperature rose above 15 °C colonization. Prepare anti-freezing equipment before planting, and emergency insulation measures should be adopted for cold currents. Appropriate control of fertilizer and water at the seedling stage prevents rough borer disease. Pay attention to ventilation and light transmission to prevent overgrowth of plants, otherwise affect early maturing and reduce yield. Using three vine pruning, 16-20 leaves leave the first melon. Watering in time to keep the ground moist, see dry see wet, promote early and late irrigation. Prevent pests and diseases mainly, fight a total of 3 times to control anthrax bactericide, in the application of music solution Nawei high-a combination of leaf fertilizer application, play the dual role of disease prevention and fertilization. 4, timely harvest May 3, such as harvesting, the total income of 8,000 yuan. The average income of 667 square meters is 4,400 yuan. Compared with other large planters, the income of 667 square meters increases 1,400 yuan. The difference from other large planters is the use of castor bean cake fat. Application of castor bean cake supplements the nutrients needed for the growth and development of watermelon, such as iron, manganese, zinc, etc. These nutrient trace elements cannot be replaced by other fertilizers. After application of cake fertilizer, the plants grew robustly, dark green leaves, shiny melons, and deep sweet reddish melons. Castor cake fertilizer can also be used in a variety of crops, and become the best fertilizer for green food. China Agricultural Network Editor
