Wild wheat is a non-cultivated species of wheat that does not belong to weeds (the herbicide has no effect on it) and is mixed with wheat in rows or rows of wheat fields. Seedlings look very similar to wheat and are difficult to find. After the jointing stage appeared, the stems were thin and the leaves were covered with slender and yellowish green. After heading, it was significantly higher than that of wheat. In severe wheat fields, there were two spikes above and below, commonly known as “two floorsâ€. Wild wheat and wheat are competing for food resources, resulting in poor individual development of wheat, smaller population structure, and irregular fields, affecting wheat yield and quality, and tending to cause lodging of wheat, which is the main reason for farmers to change varieties and increase input.
Wild Maize characteristics. According to field surveys, wild hemp has the following characteristics: First, there are many tillers, and the spike rate is very strong. The number of births is usually more than 10, and there are as many as 20-30, more than 6 more than wheat. 90% of the pods can be spikes, and the tillers are inconsistent at the heading stage. The second is that the plants are tall, the stems are thin, and lodging is easy. Plant height is generally 120-130cm, which is about 50cm higher than that of wheat. It is leaned back on wheat plants at the later stage. If wild wheat accounts for more than 15% of the wheat field, it will easily lead to lodging of the wheat, resulting in reduced yields. The third is that the wild wheat ears are long-grained and their weight is low. The average number of grains per panicle is 46, which is more than 15 grains than the cultivar. The average grain weight is 24g, which is 15g lower than that of wheat. The fourth is early maturation and strong shattering, which is about 5 days earlier than wheat.
In short, wild buckwheat seeds seem to be able to form yields, but few can be harvested, and some farmers are reluctant to remove them. This has led to an increase in the amount of wild buckwheat in the wheat fields, which can easily lead to lodging, lower yields, and lower quality. If you do not pay attention to the removal of wild miscellaneous wheat, you must change the varieties in 3-4 years, and increase the input of seeds to 60-70 yuan.
Control measures: 1, selected species. Use select high quality seeds. In particular, if you keep yourseeds, you must remove the wild wheat from the fields. Strict selection of wheat seeds before sowing, removing pods and grains. 2, cultivator. In the wheat seedling stage and the early spring return to green, the erection period for planning, is conducive to warming and security, but also in addition to rule a part of the line of wild wheat. 3, manual removal. Wild wheat can easily be distinguished after entering the wheat heading in May. It must be uprooted. Do not cut only the upper ear. Because the wild corn has a very high spike rate, the next part will grow into a panicle after three or five days. Don't go too late, it will fall off the field later.
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