How to manage rape fields in spring?

How to manage rape fields in spring? Please guide the budding stage of rape is a prosperous period of vegetative growth and reproductive growth, which is known as "spring vegetable as fierce as a tiger". Due to the low temperature and less rainfall in early spring this year, the growth of rape is slow and weak. In order to promote the stable growth of rape in spring, coordinate the relationship between vegetative growth and reproductive growth, strive for more branches, more angles, grain increase, weight gain, and reduce the harm of climate and diseases to rape growth, good field management in late spring is the key to obtain stable yield and bumper harvest of rape in a large area. The following key technical measures are specially suggested for reference and application by farmers. 1. To increase the application of moss fertilizer, if seedlings apply moss fertilizer, for fields with poor soil fertility, weak seedling growth, and late planting and dense planting, it is necessary to immediately increase and supplement moss fertilizer, and apply urea 3 kg per mu. Second, do a good job in clearing ditches and drainage according to the forecast of the meteorological department, after Rain Water's solar terms this year, Rain Water will obviously increase, which is easy to cause excessive soil moisture, poor ventilation, and hinder the growth and expansion of roots and the absorption of nutrients. At the same time, due to the high humidity in the field, diseases are easy to occur, so it is necessary to clear the ditch and drain in time and always keep the drainage and irrigation unobstructed. Third, foliar boron spraying double-low quality rapeseed is very sensitive to boron fertilizer, and boron deficiency is prone to the phenomenon of "flowering but not fruiting" (that is, flowering in a large area is not fruiting). In order to make up for the insufficient fertilization of rape in winter, the foliar boron spraying was increased in time, and 0.3% borax solution was sprayed once at bolting and early flowering stage. Fourth, to prevent Sclerotinia sclerotiorum in the high-yield rape field, a week after the early flowering stage, 40% of the sclerotia net wettable powder 1000Mel 1500 times was sprayed once, focusing on the middle and lower parts of the plant. Click to get more rape planting techniques click to get more food crop planting techniques