How to cultivate hybrid pennisetum

Pennisetum (scientific name: Pennisetum alopecuroides (L.) Spreng) perennial. The fibrous root is stout. Culms erect, tufted, densely pilose under inflorescence. Leaf sheath smooth, compressed on both sides, main veins ridged, spanning at base, longer than internodes at upper part of culm; ligule with ca. 2.5 mm cilia; leaf blade linear, base verrucous. Panicle erect; main axis densely pilose; peduncle 2-3 (- 5) mm long; bristles light green or purple; anthers apically glabrous; style United at base. Caryopsis oblong. The cell structure of leaf epidermis is different from that of upper and lower epidermis, the upper surface is long cylindrical and corrugated, and the lower surface is long cylindrical with thick wall. Flowering and fruiting, summer and autumn.

Growth habits of Pennisetum equisetum

Like cold and humid climate. Drought-resistant, sand-tolerant, barren soil. It is appropriate to choose fertile and slightly moist sand for cultivation. Grew up in a swamp. Its stems, leaves and spikes are like millet, purple in color and hairy.

The main producing areas of pennisetum

China is distributed from Northeast and North China through East, Central and Southwest provinces and regions; most of them are born on the shores, wastelands, roadsides and hillsides at an altitude of 50-3200 meters. Japan, India, North Korea, Myanmar, Pakistan, Vietnam, the Philippines, Malaysia, Oceania and Africa are also distributed.

How to cultivate hybrid pennisetum?

Variety selection: it is a hybrid of American pennisetum and purple pennisetum. The herbivorous fish were raised with its stems and leaves, the feed coefficient was 25ml / 30, and the palatability of the fish was not as good as that of Sudan grass. The mowing yield is 195,53,000t / ha. Like warm, moist, can withstand light frost, but less than 0 ℃ will freeze to death, so the Yangtze River basin can not survive the winter naturally. Seeds can be obtained from hybrid plants. At present, it is better to use the hybrid generation for asexual reproduction. The stem cutting method and root division method were used for planting. Breeding method: the first step is to survive the winter and protect the species. Before the first frost, choose the strong and solid stem with a growth period of more than 100 days as the seed stem, cut off from the base of the plant, cut off the tip, remove the hanging leaves, and set aside. The root of the whole plant can also be dug up before stopping growing in December, leaving only about 5 cm at the base of the stem, and the rest can be removed. There are many methods of overwintering heat preservation, and the effect of film greenhouse is the best. According to the number of species preservation, it can be made into greenhouse or shed. This method can not only survive the winter, but also reproduce, and the seedlings can grow early and tiller early in the next year. The specific method is to turn over the land in the greenhouse, and cut the spare seed stem into small segments with a length of 13cm, each section has a stem node, and the stem node is inclined to the lower end of the stem. The lower end of the stem is vertically inserted into the soil, so that the stem node is 3.5cm under the soil, and the upper and lower ends can not be reversed. If overwintering with the root, all the roots are implanted into the soil, and the left base stem is exposed on the soil. The distance between plants is about 10 cm. After the seed stem and root are planted in the soil, they should be drenched with water to keep the greenhouse warm and humid. If it is only for overwintering and seed conservation, the storage temperature should be kept at 5 ℃ 10 min. If the temperature is too high, it should be properly ventilated and cooled down. Overwintering can also adopt burying method, digging a shallow pit in the leeward and sunny place, putting the seed stem neatly into the cover soil, the thickness of the cover soil is about 40 cm, and the temperature is thickened when the temperature is low, so that the temperature in the pit is kept at about 7 ℃. The second step is transplanting. It can be transplanted when the temperature reaches about 15 ℃ in the first ten days of May. First turn over the land and apply enough basic fertilizer. If the root-splitting method is adopted, the overwintering root will be cut so that each root has 1 Mel and 2 buds. Do not cut the buds. The method of planting people in the field can refer to the above-mentioned overwintering method, but the row spacing is about 40ml / 45cm. The stem segments of germinated seedlings in greenhouse can be directly transplanted according to the above-mentioned plant spacing. If the method of overwintering is adopted, the seed stem shall be cut into segments according to the method of overwintering of the stem segment introduced above. Choose the stem segment with protruding stem node and bud, the lower the old stem segment, the higher the survival rate. Insert the selected stem segment upright into the soil, and cover the soil on the stem node about 6 cm. The row spacing of the plant is the same as above. Water should be drenched after transplanting. The Yangtze River Basin began to be mowed in early June, with a cutting height of 80ml and 100cm. In June and July, the growth is the fastest, and the water and fertilizer are suitable, and it can be cut every 15 days. It can be cut 10 times from June to October. The growth slows down when the temperature drops below 20 ℃ in October, and stops growing in the middle and late December. The above four grasses have high yields and high requirements for fertilizer. It is necessary to apply adequate base fertilizer, which mainly uses organic fertilizer, such as barnyard manure, 10500 Mel 15000 kg per hectare, or 600 tons of fresh pond mud (about 3 cm thick). The phosphorus-deficient soil applied about 225 Mel 300 kg of superphosphate per hectare and ploughed it into the soil together with organic fertilizer. During the cutting period, topdressing fertilizer was applied twice every time, diluted animal manure, pond mud, less or no chemical fertilizer was used. The authors found that chemical fertilizer could reduce the disease resistance of Sudan grass. If applying chemical fertilizer, it is recommended to apply ammonium sulfate about 225 kg per hectare each time, combined with ploughing and loosening the soil, the chemical fertilizer will be buried in the soil. The four kinds of forage grass grow vigorously and have few weeds, but they also need to be ploughed and weeded. Ploughing once or twice after cutting, and Yonggen at the same time. If covered with pond mud as base fertilizer, there are generally no weeds and no need for intermediate ploughing. Irrigation is needed in times of drought, especially Sudan grass, elephant grass and hybrid pennisetum. There are few diseases and insect pests in the four kinds of forage grasses. In case of drought, untimely irrigation or lack of fertilizer, there are occasionally more serious diseases and insect pests. According to the situation of diseases and insect pests, low-toxic and low-residue drugs should be selected and cut after half a month or after rain to avoid poisonous fish.