How to apply fertilizer in Jiangxi rape flower horn stage?

How to apply fertilizer in Jiangxi rape flower horn stage? The flower horn stage of rapeseed refers to the period from the beginning of flowering to maturity of rape, including flowering and pod development. During the flowering period, there is only a small amount of vegetative growth, mainly reproductive growth. Grasping the field management of the flowering stage of rapeseed is the last key to capture the high yield of rape. In the flowering stage, attention should be paid to prevent rape from insufficient nutrition or too much nitrogen fertilizer, through ingenious application of flower fertilizer and grain fertilizer to reduce shade angle, prevent shedding, increase angle rate, seed number and grain weight, and increase oil content. In addition, attention should be paid to drought prevention, timely removal of old yellow leaves and prevention of lodging. The application of flower fertilizer should be determined according to seedling condition, soil fertility and other conditions. Rape with strong autumn and stable growth in spring can apply flower fertilizer on the basis of slightly faded leaves and stems at the early flowering stage. 5-7.5 kg of urea or 10-15 kg of ammonium sulfate can be applied per mu. The application of flower fertilizer should be strictly controlled for rape with good spring hair, sufficient soil stamina, dark leaf color or excessive population development in the early flowering stage. In vegetable fields with insufficient spring hair, small groups and individuals, and obvious decline in flowering growth, flower fertilizer should be applied early. From the full flowering stage to the final flowering stage, if the rape with premature senescence, early final flowering and light green leaves, foliar fertilizer spraying can be taken before the final flowering stage to replenish nutrition in time. Generally, 0.3 jin of potassium dihydrogen phosphate and 0.5-1 kg of urea are used per mu, 75 kg of water is sprayed on the whole plant and sprayed 2-3 times, which can prolong the functional period of green parts such as pod peel and stalk, so as to enhance photosynthesis. To meet the needs of full grains. As long as the rape is growing normally and the stubble is tight, it is generally inappropriate to apply grain fertilizer so as not to cause greedy green and late ripening. Click to get more rape planting techniques click to get more food crop planting techniques