When is the best time to plant wheat?

As the saying goes, "the autumnal equinox is the time to plant wheat", and now it is the sowing time of winter wheat. In rural areas, there are still many proverbs about growing wheat, and old farmers attach great importance to these agricultural proverbs, because they are not only the experience and wisdom handed down by ancestors, but also the scientific planting concept.

Of course, some people say that it is too simple to use simple proverbs to guide planting. In fact, we really should not underestimate the rural proverb, which also stresses dialectics. Next, through two agricultural proverbs about planting wheat, we will talk about the current time of planting wheat.

First of all, "planting mountains in white dew, rivers in autumn equinox and beaches in cold dew", planting wheat should be adapted to local conditions.

Although the autumnal equinox season is the best time to plant wheat, it should be adapted to local conditions. The predecessors summed up a set of systematic theories. For hilly and mountainous areas, due to poor land, low ground temperature and slow emergence, it is necessary to sow as soon as possible. As for when to advance? Dew before autumnal equinox. On the other hand, although the floodplain sandy land is easy to germinate early, it is easy to grow too fast at the seedling stage because of the leakage of water and fertilizer in the soil, so it can't resist the sudden attack of cold wind and blizzard and can't survive the winter safely.

Only fertile land is suitable for sowing in autumnal equinox, ensuring normal emergence, strong seedling stage and suitable for overwintering.

Here, the control of seedling stage is the key factor of planting. Once the seedling stage is too strong or too weak, and the growth is too fast or too slow, it will have an impact on overwintering. The seedlings are weak and can't stand the cold; Seedlings grow vigorously, branch ahead of time, and often lack resistance to snow in winter.

Secondly, "wheat should be planted in August, not in September", so wheat should be planted at a suitable time.

This proverb says that planting should be in a suitable period, in which August and September are the lunar calendar, mainly about the influence of temperature on wheat germination. After September of the lunar calendar, the temperature drops, which will affect the germination of wheat seeds. Therefore, when seedlings are easy to emerge in August, even if it is drought-resistant, don't wait too late. If the soil moisture is good, it will be difficult for weak seedlings to survive the winter.

In fact, the scientific cultivation of wheat needs a suitable temperature, generally16℃ ~ 20℃; Sufficient cumulative growth temperature is needed, generally at 400℃. According to the weather in Jiaodong, it is around 10, not later than the first frost. Of course, due to various conditions, the sowing date does not need to be generalized, but should be decided according to the local land and weather conditions. In addition, experienced farmers often control the number and planting density of wheat seeds to ensure the emergence rate, such as planting early and reducing wheat seeds as appropriate; Sowing time is late, and increasing wheat seeds appropriately is to ensure that strong seedlings can survive the winter.

In short, wheat planting needs to be combined with local phenology, climate and other factors, while China has a vast territory and there is no unified time.