Cultivation techniques of Autumn Sweet Corn in sowing period

Sweet corn fruit is fresh and juicy, also known as fruit corn, is a new type of economic corn which integrates fruits, vegetables and feed. Sweet corn is mainly fresh ears listed or processed into canned sweet corn, fried vegetables and raw food, sweet taste, deeply loved by people. Planting sweet corn has high economic benefit and good development prospect. July-August is the sowing season of autumn sweet corn, and its sowing time and cultivation techniques are as follows: 1. Strict isolation: in order to ensure the quality of sweet corn, sweet corn and ordinary corn or other types of sweet corn should be strictly isolated to prevent flour mixing. The commonly used isolation methods are spatial isolation and time isolation. The general distance of spatial isolation is more than 100m, or natural barriers such as woods and hills are used to isolate naturally. The difference of sowing time with time isolation should be more than 30 days. 2. Sowing at the right time: the sowing season arrangement of sweet corn should be considered comprehensively, such as market supply time, consumption, production season of fruit and vegetable processing plant and previous harvest time. When planting in a large area, attention should be paid to sowing in batches, harvesting by stages and listing. The latest sowing date in autumn must ensure that the temperature in the harvest period is more than 18 ℃. The autumn sowing time in our county is generally in the middle and late July, and the latest sowing date is in early August. 3. Soil preparation and application of basic fertilizer: select fields with deep soil layer, convenient drainage and irrigation and medium and upper fertility. The production of furrows should be convenient for drainage and irrigation, and drainage ditches should be dug around. 1000kg was applied in combination with ploughing and raking mu before planting the bed. In general, the width of the furrow is 125-130cm, the planting line is two rows, and the depth is 20-30cm. Re-apply base fertilizer before sowing. Sowing ditches are opened along the border, the distance of the ditch is 65cm, and the depth of the ditch is 12cm. In the sowing ditch, compound fertilizer 50kg was applied per 667m2, and calcium magnesium phosphorus 25kg was used as base fertilizer. Sowing after covering soil with 6-7cm, contact between seeds and fertilizers was strictly prohibited. 4. Planting density: sweet corn dominated by fresh food is generally harvested in the milk stage, and the growth period is relatively short, so the density should be increased appropriately according to the characteristics of the variety. General dense planting specifications are row spacing 60-65cm, plant spacing 27cm, planting 3500-4000 plants per 667m2. 5. Fine sowing: suitably shallow sowing, sweet corn generally sowing no deeper than 4cm. When the soil moisture reaches the field capacity of 60-70%, it is suitable for sowing. If the soil water content is on the low side, you can use dilute water and fertilizer to point and sow. The hole sows 2-3 seeds mixed with pesticides, and the upper part of the seed is covered with fine soil 3-4cm. 6. Chemical weeding: 50% Acetochlor emulsion 50g 100kg was sprayed evenly on the border and ditch surface with 50% Acetochlor emulsion on the day after sowing.