Cultivating oilseed rape
Convex and convex cultivation of rapeseed is a double-row cultivation of deep trenches and high ridges. From 1998 to 1999, 0.14 million hm2 rape was cultivated in the concave-convex method in Fuyang County, accounting for 47.7% of the total rapeseed area. 1. Cultivation method: 80cm combination, east to west for ridge ditch, ditch for half, ridge bottom 40cm wide, ditch bottom width 40cm, ditch for soil ridge, trench to ridge top level difference of 26cm, basal fertilizer concentrated in the ridge At the end, generally 667m2 organic fertiliser 3000kg, compound fertilizer 50kg, borax 0.5kg, pre-planting seedlings to cure a insect, from mid-October to early November, planting 2 rows of canola at the bottom of the trench, row spacing 30cm, plant spacing 17cm, 667m2 planting 10,000 About the same strain, other management is the same as conventional cultivation. 2. Cultivation characteristics 2.1 The method of planting seedlings and bumps on the surface is high in the depth of the wall. The performance in production is drought resistance, temperature increase, and seedling protection. The 8a survey conducted from 1991 to 1998 showed that, compared with Chaoyanggou, the water content in the bottom of the ditch was 8.7 percentage points higher than that in the bottom of the ditch, and the ground temperature at the bottom of the ditch increased by 0.9°C at 5 cm. No dead seedlings occurred. 2.2 The first resistance is due to the roof of the ridge being exposed to wind and rain, soil and water flowing downstream to form natural earthworms; followed by the mechanical support of the convex high wall; the third is because the soil on the bottom of the trench has good moisture content, high ground temperature, concentrated nutrients, and robust growth of the seedlings. The root system is developed. 8a did not appear lodging phenomenon in rapeseed rape. 2.3 The statistical data obtained from the 8a production increase show that the rapeseed rapeseed production increased by 12.8-41.2kg compared with Chaoyanggou.