Canola has a scent, and its flavor is with a little sour, bitter and sweet.

In the petals of rapeseed flowers, there is a kind of oil cells, which will secrete aromatic oils, and the aromatic oils volatilize to be the smell of rapeseed flowers. The smell of rapeseed flowers is also related to the varieties, some varieties have a stronger smell, and some varieties will have a lighter flower smell.

Rapeseed flowers usually bloom around January-March each year, because of the differences in light and heat, the flowering period between regions are not the same, the high temperature of the flowering time of the region in March-April, the lower the temperature of the rapeseed flowers bloom the later, like the Qinghai Province, the rapeseed flowers until July to open.

Rapeseed rape flower is a typical four-petal flower type, as opposed to having four calyxes, arranged in a cross pattern, with yellow petals neatly surrounding the center of the flower, which is finely veined and slightly thin.

Rapeseed planting techniques:

1, land selection

Planting of rapeseed, pay attention to deep plowing, and then with deep fertilization, to ensure that the upper false under the real, and the implementation of a reasonable crop rotation, rapeseed and graminaceous crop wheat rotation, can effectively reduce the occurrence of botrytis, selection of high-quality and high-yield rapeseed seeds, the seeds of the disease, the Diseased seeds are removed and put in warm water to soak, which can ensure the emergence of rapeseed flowers.

2, timely sowing

Before sowing, you need to evenly sow the seeds into the ditch, and rape seeds are more sensitive to light, after sowing, you need to use a good basal fertilizer and ternary composite fertilizer to sprinkle, if there is a rainy season, we need to do a good job of drainage work in a timely manner, and to control the humidity in the field, to ensure that normal growth of oilseed rape.

3, fertilization

Early bottom fertilizer should be sufficient, and do a good job of layering and batch application, to ensure that the root system of rapeseed growth needs, seedling period, but also need to be applied to urea, so as to play a role in promoting the role of growth, moss, rapeseed growth is rapid, the foliage is rapidly expanding, a large number of buds and flowers are differentiated, the fertilizer should be reasonable to ensure that the growth of rapeseed flower is neat, and enhance the corner of the fruit is bright.

4, weed

When planting canola, there will be a large number of weeds, so one week after planting canola, you need to use 10% grass glyphosate or 41% agro-agro water for uniform spraying, when the weed grows to 3-6 leaves, with 12.5% of the cover grass can be or 15% of the fine stabilized to kill the emulsified oil spray prevention and treatment, prevention and control effect is very good.

5, pest control

Common pests and diseases of rapeseed are downy mildew, virus disease, botrytis, cabbage greenfly, so planting friends need to do a good job of field management, timely removal of diseased plants, and deep plowing of the soil, to avoid pests, pests, diseases and insects, you can use the special agents for spray control.

6, harvest

When the rapeseed flowers bloom one month later, it can be harvested, this time the weight of rapeseed has reached the optimal state, the harvest can obtain a high market value.