Method for planting one-year-two-harvest brassica napus spring rape in northeast China

Abstract

The invention relates to a method for planting one-year-two-harvest brassica napus spring rapes in northeast China, and belongs to the technical field of agricultural plantation. The method comprises the following steps: a, sowing double-low early-maturing brassica napus spring rapes in spring: a.1, preparing land and applying base fertilizer before winter in the first year; a.2, when earth surface is defrosted for 5-7 cm in the middle of March in the next year, sowing double-lowearly-maturing type spring rape seeds; a.3, managing fields; a.4, when 80% of rape capsules turn yellow, or when top particles enter a milky ripe period, harvesting; b. sowing double-low mid-maturing brassica napus spring rapes: b.1, after harvest of the spring sowed double-low early-maturing brassica napus spring rapes of step a, preparing land and applying base fertilizer; b.2, sowing double-low mid-maturing brassica napus spring rape seeds in late June of the next year; b.3, managing fields; b.4, when 80% of rape capsules turn yellow, or when top particles enter a milky ripe period, harvesting. Beneficial effects of the method are that a planting method of one-year-one-harvest becomes one-year-two-harvest.

Description

technical field [0001] The invention relates to a method for planting two-ripening cabbage-type spring rapeseed a year in northeast China, belonging to the technical field of agricultural planting. Background technique [0002] Rapeseed is an oil crop widely planted in the world, and it is also a traditional oil crop in my country. The vegetable oil provided accounts for about 60% of my country's edible vegetable oil. Rapeseed is divided into two major production areas, the southern winter rapeseed and the northern spring rapeseed. Among them, the planting range of the northern spring rapeseed is relatively limited, mainly in the northeast and northwest regions, accounting for about 10% of the total area of ​​rapeseed in the country, and its output accounts for only 7-8% of the country's total. %. Among them, the type of spring sowing and autumn harvest has the largest area, accounting for about 80% of the area of ​​spring rapeseed. Spring rapeseed is cooked once a year, a...

AI Technical Summary

Problems solved by technology

Spring rapeseed is cooked once a year, and the varieties are mainly cabbage-type rapeseed. The plants are short, the yield per unit area is low, the stability of yield is poor, and the production potential is small