morphological character
Panicum miliaceum. The root system is extremely developed. Stems clustered, base inclined, height 10-90 cm.
Both sides of leaf sheath are flat and ridged, relaxed, hairless or sparse wart; The length of ligule is about 65438±0mm；; Leaf blade is flat, linear,10-15cm long, 3-5mm wide, hairless or hairy, with warts on it.
Spike has 2-7 fingers attached to the top of stem, rarely solitary, 3- 10 cm long and 3-5 mm wide; Spikelets are 4-7 mm long, 2-3 mm wide and contain 3-6 florets; Glumes lanceolate, ridged and rough; The length of the first glume is1.5-2mm; The second glume is 2-3 mm long; The first lemma is 3-4 mm long, ovoid, membranous and ridged, with narrow wings on the ridge. The inner lemma is shorter than the lemma and has 2 ridges with narrow wings on the ridge.
The capsule is ovoid, about 65438 0.5 mm long, with concave base and obvious wavy wrinkles. Paddle 2, folded, with 5 veins. Flowering and fruiting period: June-65438+1October.
Extended data:
Danger prevention
Main danger
1, competing with agricultural products for water, nutrients and light energy. Weeds have developed roots, strong ability to absorb soil moisture and nutrients, and strong growth advantages. The consumption of water and fertilizer often exceeds the consumption of crop growth. Weeds have a strong growth advantage, and their plant height is often higher than that of crops, which affects the utilization of light energy and photosynthesis of crops and interferes with and limits the growth of crops.
2. Increase management labor and production costs. Weed-ridden farmland consumes a lot of labor, and at the same time, it increases the production cost because of the large amount of labor.