Regenerating Sorghum: Cultivation and Management Techniques of "Zongza No. 4"

October 16, 2018

This year, Chongqing City has undertaken the construction of a high-quality reclaimed stilts base in the city. The city has implemented 20,000 mu, and the main hybrid species used is the hybrid No. 4. The plant height of about 2 meters, strong growth, thick stems, scattered spike type, lodging resistance, strong regeneration. Last year, the city's large-scale demonstration planted 2,800 mu, with an average yield of 711 kilograms per mu, and an output value of 1,150 yuan per mu (including 285 kilograms per mu in the first quarter and 426 kilograms per mu in the regeneration season), has great potential for yield increase and significant benefits. This year, the city's reclaimed sorghum has been planted early and has high quality. At present, most of the sorghum seedlings are 5-6 leaf-ages old and are about to be transplanted. In order to earnestly do a good job in the cultivation and management of the first quarter to ensure a high yield and good harvest in both seasons, the following key points are proposed: Cultivation techniques measures: 1. Scientific planning, rational layout: The city is suitable for the regeneration of sorghum cultivation. In view of the continuous drought and low rainfall this year, the reclaimed sorghum was replanted in the fields of Wangtian, Gaotuotian, Gaotaiwei, and Tiankan where the ten droughts and nine droughts did not occur. 2. Early planting at a proper time and reasonable close planting: The best transplanting time in the city before April 20, when the leaf age of 6-7 leaves when the rainy days before timely transplanting. Mu planting 7000---8000 strains (1.5-1.71 feet, planting two plants). 3. Reasonable fertilization: The principle of fertilization is to apply enough base fertilizer, timely top dressing, light lifting of young seedlings, replanting of jointing and panicle fertilizer, and supplementation of panicle fertilizer. The average medium-fertilizer plot uses 35% of the special amino acid fertilizer 40 kg or 50% of the special BB fertilizer 20 kg and pig manure water 1500-2000 kg as the base fertilizer. (Fertilization levels show slight increase and decrease in soil fertility). After transplanting survival, apply a dredging water. Jointing mu with 5 kilograms of urea plus 1,000 kilograms of livestock and livestock manure for raising seedlings. Mu 10-15 kilograms of urea and 1,000 kilograms of livestock manure are used as jointing and booting fertilizer. If the late defertilization can be used mu 5 kg urea +1000 kg of livestock and manure for ear grain fertilizer. 4. Strengthen field management and prevention of pests and diseases: During the whole growth period of sorghum, locusts, aphids, mane flies and sheath blight are prone to occur. General aphid and mane mu with 1.0 kilograms of "Carbofuran" in the prevention and treatment of seedling stage snacks; aphids with "Cerberium" or 40% of "dimethoplast" emulsion 1000 times spray control; ear blast in the jointing stage, scattered seed stage It was sprayed with 800 times liquid of “killing insects” or “enemy killing”; Sheath blight was treated with “jinggangmycin” 800-1000 times spray.