How much is the cotton seed per jin? What are the high-yielding varieties? How do you plant it?

Cotton, the seed fiber of Malvaceae, is one of the most important crops in the world with high yield and low production cost. So how much is its seed per jin? What are the high-yielding varieties? How do you plant it? It is reported that hybrid cotton and conventional cotton seeds fell compared with the same period last year. The price of hybrid cotton seeds in the Yangtze River Basin was 192.96 yuan / kg, down 0.47% from the same period last year; the price of conventional cotton in the Yellow River Basin was 25.97 yuan / kg, down 0.32% from the same period last year; and the unified seed price in the Northwest Inland Cotton Corps was 22.40 yuan / kg, an increase of 1.95% over the same period last year. The province with the biggest drop in cotton seed prices was Anhui, with hybrid cotton falling by 2.88% and conventional cotton by 4.76%.

What are the high-yielding varieties of cotton seeds?

1. Short branch cotton 28, spring sowing for 119 days, summer sowing for 108 days, fast emergence, lifelong growth, cylindrical plant type, thick green leaf color, 4.5 nodes of the first fruit branch, 20-30 bolls per plant, more than 50, single boll weight about 6 grams, plant height 70 cm, spring sowing height 100 cm, thin boll shell, smooth boll opening, lint percentage 40%, seed index 10.5 g, preflowering rate 99%, precocious but not premature senescence. The fruit branch is about 20 cm long, self-sealing edge tip, no branch, the leaf is medium to small, the boll is concentrated, the peach is fast, the upper, middle and lower parts are uniform and the permeability is good.

two。 Xiangzamian No. 7, which has a growth period of 123 days in spring sowing in the Yangtze River valley, has good seedling emergence, strong growth and good uniformity. The plant height is 115 cm, the plant type is compact, the fruit branch is long and spreading, the stem is stout, hairy, the leaf is larger, dark green, the first fruit branch node is 6.4 nodes, the boll per plant is 28, the boll is oval, the boll weight is 6.1 grams, the lint percentage is 42.1%, the seed finger is 9.9 grams, the flower rate before frost is 94.3%, and the inflorescence rate is 7.4%. Resistant to Fusarium wilt, Verticillium wilt, medium resistance to cotton bollworm, resistance to red bollworm.

3. Zhongmiansuo 63, good seedling emergence, tower-shaped plant, high school plant, compact fruit branches, less hairy stems, medium-sized leaves, dark leaves, round bolls, smooth spitting. During the growth period of 125 days, plant height 109.50~121.0cm, fruit branches 17.81, boll per plant 25.57-29.5, boll weight 5.71-6.6 g, lint percentage 40.9-41.52%, seed finger 9.81-10.3 g, pre-frost flower rate 88.57-93%, stiff petal rate 4.4-12.24%. Resistant to Fusarium wilt, Verticillium wilt, high resistance to cotton bollworm, high resistance to red bollworm.

4. Tongza 411, the spring sowing growth period of cotton in the Yangtze River valley is 124 days. The seedling is good, the growth is strong, the uniformity is good. The plant height is 114.7 cm, the plant type is compact, the fruit branch is longer and spreading, the stem is stout, the hairs are less, the leaf is medium size, dark green, the first fruit branch is 6.7 nodes, the boll per plant is 29.5, the boll is oval, the boll is smooth, the single boll weight is 6g, the lint percentage is 43.2%, the seed finger is 10.4g, the pre-frost flower rate is 93.3%, and the inflorescence rate is 11.8%. Resistant to Fusarium wilt, Verticillium wilt and cotton bollworm.

5. Ezamian 29, the spring sowing growth period of cotton in the Yangtze River basin is 123 days, with good seedling emergence, strong growth and good uniformity. The plant type is compact, the plant height is 118 cm, the stem is stout and less fluffy, the fruit branches are long and spreading, the leaves are medium size and light green, the first fruit branch is 6.3 nodes, the bolls per plant are 26.1, the bolls are oval, the bolls are smooth, the single boll weight is 6.2 grams, the lint percentage is 41.7%, the seed finger is 10.4 grams, and the pre-frost flowering rate is 94.8%. Resistant to Fusarium wilt, Verticillium wilt, high resistance to cotton bollworm, high resistance to red bollworm.

6. Lu Mianyan 28, the whole growth period of interplanting wheat field in the Yellow River area is 138 days, the plant shape is loose, the plant height is 90.4 cm, the stem is tough, the hairs are medium-dense, the leaves are medium-sized and green, the whole plant has glands, the glands are medium-dense, the fruit branch begins to node 6.8, the boll per plant is 15.7, the boll is round, the boll tip is protruding, the boll shell is thin, the boll is smooth and concentrated, the single boll weight is 5.8 grams, lint percentage is 41.5%, seed finger is 10.8 grams. The flower rate before frost is 88.6%, the seedling potential is general, the whole growth period is steady, the leaf function is strong in the middle and later stage, and there is no premature senility. High resistance to Fusarium wilt, Verticillium wilt and cotton bollworm.

7. Zhongmiansuo 50, the whole growth period of summer sowing in the Yellow River basin is 110 days, the seedlings emerge quickly, the seedlings are neat and strong, the growth is strong in the early and middle stages, and weakens in the later stage, and the uniformity is good. The plant is tower-shaped and compact. High resistance to Fusarium wilt, resistance to Verticillium wilt, resistance to cotton bollworm, resistance to red bollworm.

8. Jimian 169, the growth period of spring sowing in the cotton area of the Yellow River basin is 123 days. General emergence of seedlings, general growth in the early stage, strong growth in the middle and later stage, spitting smoothly. Plant height 107.0 cm, plant type is loose, stem stout, fluffy, leaves medium size, dark green, bell oval, large, bell tip is not obvious, large bracts. The first fruit branch has 7.0 nodes, 17.5 bolls per plant and 6.3 grams per boll. The lint percentage is 39.4%, the seed refers to 10.3 grams, and the flowering rate before frost is 90.3%. Resistant to Fusarium wilt, Verticillium wilt and high resistance to cotton bollworm.

9. Xinluzao 41, plant type tube type, compact, plant is short, fruit branch is II type fruit branch, fruit branch is lifted up. The leaf is small wrinkled, the leaf color is dark green, the leaf crack is deep. The boll is oval, the bell shell is thin, the mouth is pointed, it is easy to pick up flowers, the catkins are white and mercerized, the number of effective bolls per plant is 7.1, the weight of single boll is 5.56 grams, and the lint percentage is 42.0%. Resistant to Fusarium wilt and Verticillium wilt.

10. Zhongmiansuo 49, early and middle maturing upland cotton variety, the whole growth period is 145 days. The plant is tower-shaped, with soft and flexible stems, few hairs, medium-sized leaves, lifting up, deeply split leaves, and Ⅱ fruit branches. The plant height is 61.3 cm, the first fruit branch is 5.5 nodes, the number of fruit branches per plant is 10.4, the bolls per plant are 7.1, the bolls are oval, the single boll weight is 6.1 grams, the seed index is 11.1 grams, the sterile seed rate is 6.7%, the lint percentage is 41.8%, and the pre-frost flower rate is 93.7%, 2.5%, and 28.8 mm in span. Resistant to Fusarium wilt and Verticillium wilt.

How to plant cotton seeds?

1. Dry the seeds. The seeds are usually dried 15 days before sowing.

two。 Soak the seeds. Seed soaking in warm soup is a traditional treatment method of hairy seeds in China, and its main function is to promote seed germination and emergence, especially under the condition of poor soil moisture, which is conducive to the realization of one-sowing whole seedlings.

3. Mix seeds with potions. Seed dressing with insecticides can kill the germs carried by the seeds and the bacteria in the surrounding soil after sowing, so as to improve the emergence rate, control seedling diseases, and reduce the harm of insect pests at the seedling stage.

4. Sowing with sufficient moisture, due to the strict requirements of water, temperature and oxygen conditions for cotton seed germination, especially water.

5. Sowing at the right time, temperature is an important basis for determining the sowing date. Generally speaking, when the ground temperature of 5 cm stably passes through 14 ℃ in 5 days, it is the sowing period of cotton.

6. The appropriate amount of sowing should be determined according to sowing mode, germination rate, seedling density and soil moisture. For strip sowing, 10 kilograms of hairy seeds are needed per mu. On-demand sowing or hole sowing, 5 seeds per hole, 5m / mu, 5m / mu, 5m / mu, 7jin / mu, 2m / mu, 2m / m, 4jin / mu. The amount of sowing should not be too large, otherwise, seeds will be wasted, high-footed and weak seedlings will be easily formed after emergence, and the disease will be serious.

7. It is suitable for sowing depth. Generally, the sowing depth should be 3 mi 4 cm. Cover the soil in time after sowing.

8. Drought-resistant sowing is often dry in spring, and drought-resistant sowing should be carried out in cotton fields without soil moisture conditions, and the method of "water seed package" is generally adopted. The technical points are as follows: a shallow trench is opened according to the requirements of row spacing, with a depth of 2.5ml / 3cm; water is evenly watered, and the amount of water is suitable to receive the soil at the bottom; after underwater infiltration, the seeds are sown according to the requirements of plant spacing; then cover the soil with wet soil at the bottom and dry soil at the top, with a ridge height of 3cm and a ridge width of 10cm; when 70% of the cottonseed is rooted, break the ridge to cover the soil in time, and put it flat at one time.

9. Plastic film mulching, slow temperature recovery and unstable temperature in spring are important factors to limit the whole seedling and promote the early development of cotton seedlings. Plastic film mulching not only has the effect of heat preservation and increase temperature, but also has the function of preserving and increasing soil moisture, which can ensure the early development of whole and strong seedlings of cotton. According to the procedure of sowing and mulching, plastic film mulching cotton can be divided into sowing before mulching and sowing after sowing. Generally adopt sowing before covering, when covering the plastic film, the plastic film should be in close contact with the ground, the edge of the plastic film should be pressed vertically into the ditch as far as possible, the depth of the soil should not be less than 5 cm, and the soil should be pressed on the film after covering the film, generally pressing a pile of wet soil every 3 times, in case the strong wind blows the plastic film, or the plastic film incites to hurt cotton seedlings up and down.

Time: 2019-03-24 Click: