1 The Harmfulness of Malicious Weeds in Wheat Field
1.1 Sections of wheat, brome, wild oats, bluegrass and wheat belong to the grass family, which has large reproductive capacity and strong tillering ability. For example, the seed yield of one aegilops nucifera seed is 60 at least in the second year, 3,600 in the third year, 216,000 in the fourth year, and 12.96 million in the fifth year. At this rate of development, these weeds can be flooded in some areas in a few years.
1.2 It is easy to spread and difficult to control. Jatropha curcas and other virulent weeds have similar characteristics to those of wheat. They are not easy to identify in the early stage and are later in the ripening period than the wheat. The seeds are very difficult to remove. At the same time, weed seeds can be spread over a long distance with seed transport and agricultural machinery across regions. Some people took out the weeds and tossed them on the roadside and on the ground, causing another spread. Wheat bran can also cause weeds to spread.
1.3 Harmful to wheat production. As the vicious weeds such as Aegilops cerevisiae and wheat contend for the light, compete for fertilizer and compete for water, it is very easy for wheat to reduce its production and harvest.
2 Gramineous Weeds Identification Method
2.1 As the wheat sowing is sowed by machine, the wheat seedlings are all grown into ridges, and the weeds are scattered without regularity. The vast majority of the seedlings between rows are grassy weeds.
2.2 Carefully observe the differences in plant morphology. The rhizomes of bromegrass, aegilops, and amalines are reddish-brown or purple-red, while the rhizomes of wheat are white; the leaves of bromegrass, amygdalus, and wild oats are covered with hair, while the leaves of wheat are not fluffy; The leaves of wheat are narrower than wheat, and the leaf margins are plentiful. The leaves of wild oats are wider than wheat. The hair on the leaves is inverted, the wild oats have no ears, and the wheat has leaf ears.
2.3 When the barley wheat is difficult to distinguish, the seed can be dug out. The seeds of the wheat are barrel-shaped. The seeds of other weeds are similar to the grains, but they are thinner than the grains.
1.1 Sections of wheat, brome, wild oats, bluegrass and wheat belong to the grass family, which has large reproductive capacity and strong tillering ability. For example, the seed yield of one aegilops nucifera seed is 60 at least in the second year, 3,600 in the third year, 216,000 in the fourth year, and 12.96 million in the fifth year. At this rate of development, these weeds can be flooded in some areas in a few years.
1.2 It is easy to spread and difficult to control. Jatropha curcas and other virulent weeds have similar characteristics to those of wheat. They are not easy to identify in the early stage and are later in the ripening period than the wheat. The seeds are very difficult to remove. At the same time, weed seeds can be spread over a long distance with seed transport and agricultural machinery across regions. Some people took out the weeds and tossed them on the roadside and on the ground, causing another spread. Wheat bran can also cause weeds to spread.
1.3 Harmful to wheat production. As the vicious weeds such as Aegilops cerevisiae and wheat contend for the light, compete for fertilizer and compete for water, it is very easy for wheat to reduce its production and harvest.
2 Gramineous Weeds Identification Method
2.1 As the wheat sowing is sowed by machine, the wheat seedlings are all grown into ridges, and the weeds are scattered without regularity. The vast majority of the seedlings between rows are grassy weeds.
2.2 Carefully observe the differences in plant morphology. The rhizomes of bromegrass, aegilops, and amalines are reddish-brown or purple-red, while the rhizomes of wheat are white; the leaves of bromegrass, amygdalus, and wild oats are covered with hair, while the leaves of wheat are not fluffy; The leaves of wheat are narrower than wheat, and the leaf margins are plentiful. The leaves of wild oats are wider than wheat. The hair on the leaves is inverted, the wild oats have no ears, and the wheat has leaf ears.
2.3 When the barley wheat is difficult to distinguish, the seed can be dug out. The seeds of the wheat are barrel-shaped. The seeds of other weeds are similar to the grains, but they are thinner than the grains.
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