Wild oats, a very common weed, it is widely distributed, basically in the winter wheat planting area have occurred, at the same time it is not a small harm, the reproduction ability is very strong, the seeds survive in the soil for a long time, to the normal growth of wheat.
Wild oats is a grassy weed, from the appearance, and wheat, although there are differences, but there are a lot of similarities, I remember a joke, in the past, there is a young man, usually do not work, idle, do not go to planting, and one year, his father was sick, so he went to pull weeds, because they will not distinguish between wild oats and wheat, the result is that the wheat are pulled out, although it is a joke, but the reality It's a joke, but in reality it really exists.
The content of this article, a small helper from the growth of wild oats characteristics, dissemination pathways, the degree of harm, prevention and control methods, such as four aspects to give you a detailed introduction, the following began to explain.
I, wild oats characteristics1, from the leaf analysis, compared to the leaves of wheat, a little narrow and thin, as can be seen in the picture above.
2, from the leaf stem, there will be reddish symptoms, this point is a very important feature.
3, a close look at the leaf blade, you can see that there is a downy hair on the leaf blade, while wheat does not.
4, from the inflorescence analysis, pyramidal, branching angular ribbing and feel a sense of roughness.
The above characteristics, you can quickly distinguish the wild oats, but in its seedling period, you need to carefully distinguish, the above characteristics in the growing up, it will become more and more obvious, finished the characteristics, and then talk about the wild oats what are the hazards.
Two, the harm of wild oats1, and wheat will compete for water, fertilizer, sunshine, due to the same grass family, coupled with its ability to grow vigorously, planting wheat fertilizer is a certain amount, if the field wild oats too much, the nutrients absorbed by the increase, on the contrary, the wheat absorbs less, not conducive to the growth of wheat, and similarly, the same water, and the fight for sunshine when the height of the field wild oats is higher than the height of the field wild oats, the nutrients absorbed by the field wild oats. When the height of wild oats in the field is higher than that of wheat, wheat is covered by it, affecting the photosynthesis of wheat.
2, adaptable, in the external temperature changes, better than wheat adaptability, and growth compared to wheat is also more vigorous, not conducive to the normal growth of wheat.
3, strong reproductive capacity, a plant above the seeds can reach about 500, if allowed to reproduce, seriously affect the normal growth of wheat, resulting in reduced yields.
The harm of wild oats in general, is to compete with the wheat, if not get rid of it, wheat growth must be affected, to understand the harm of wild oats, and then talk about the reasons for the occurrence of wild oats.
Three, wild oats spread pathway1, seed dissemination, in the wheat harvest, which is mixed with some wild oats seeds (in addition to the bad), and then wait until the next year when sowing, with the wheat sowing, then began to harm.
2, the harvester spreads, now harvesting wheat is basically with the harvester, assuming that when the A plot of wild oats a lot of wheat, harvested after the A plot of wheat, the harvester will carry some wild oat seeds, and then collect the B plot of wheat, the wild oat seeds will fall in the B plot, and then wait for the right temperature, began to reproduce.
3, with the wind and rain spread, such as windy weather, rainy weather, wild oat seeds will be spread with the wind or rain, blowing to where or flow to where, where the propagation, and then meet the wind and rain, continue to continue to spread.
The above three ways of spreading, to the first one mostly, some people say that this can not be avoided, but also try to weed clean, to avoid more wild oats harm, once found, timely prevention and removal, so the following then say wild oats prevention and removal methods.
Four, wild oats prevention and removal methods1, pre-sowing wheat de-emphasis treatment, try to ensure the purity of wheat.
2, the plot is small, have time for friends, you can manually pull out, and then take out of the field.
3, herbicide prevention, this point is also of interest to everyone, there are a lot of wheat grass herbicides on the market, there are also a lot of prevention of wild oats, commonly used kynurenine, fine oxazolyl grass, a friend responded that the above agents in the local resistance to large, general effect, you can also choose to imported agents such as metsulfuron-methyl, amidosulfanilamide, flutriafol-sulfuron-methyl, and so on, if it does not work, that then combine with each other and use compounding agents.
Lastly remind you of one thing, it is recommended that you in the prevention of wild oats, choose the year before the drug control, pay attention to do not re-spray and leakage of spray, and secondly, it is very important to hit the drug when the temperature, more than 10 degrees for the good, if not up to more than 10 degrees, but also to keep in more than 6 degrees, sunny and no windy weather, after 10:00 a.m., 15:00 p.m. before hitting the drug for the appropriate.