How many corn seeds do you need per mu of land? What are the high-yielding varieties? How much fertilizer do you need?

Maize seed is a vegetative form with the ability to grow into a maize plant, which is formed by pollination and fertilization of ovules. Do you know how many corn seeds are used in an acre of land? Are there any high-yielding varieties? How much fertilizer should be applied? From Uncle Li, a corn grower in Xinyang, Henan Province, he learned that planting corn is about 4 jin per mu of land. Under normal circumstances, if a single seed is sown in a hectare of about 40 jin, it will not exceed 5 jin. This depends on the size of the seed particles. Double seed sowing is 80 jin. The normal amount of chemical fertilizer is 6-8 bags of sulfur-based fertilizer 15-15-15 in the case of topdressing. Look at the plot.

What are the high-yielding varieties of corn seeds?

I. recommendation of high-yielding maize varieties in Huang-Huai-Hai region

The main results are as follows: 1. Zhengdan 958 corn species: it is suitable to be planted in the medium and above fertility plots in Huang-Huai-Hai summer corn area.

2. Xundan 20 corn species: suitable for planting in summer sowing areas of Henan, Shandong, central and southern Hebei, Shaanxi, Anhui, Jiangsu and Shanxi Yuncheng, as well as areas with accumulated temperature of ≥ 10 ℃ activity above 3000 ℃ in Inner Mongolia.

3. Longping 206 maize species: suitable for planting in summer sowing areas of Anhui, Huaibei, Henan (excluding Kaifeng, Shangqiu, Zhoukou) and Shandong (areas with high incidence of tumor smut).

4. Jinhai No. 5 maize variety: this variety is suitable for summer sowing in Henan, Hebei, Shandong, Shaanxi, Jiangsu, Anhui and Shanxi Yuncheng, and should be used cautiously in areas with high incidence of leaf diseases and smut.

5. Zhongke 11: it is suitable to be planted in summer corn areas of Hebei, Henan, Shandong, Shaanxi, northern Anhui, northern Jiangsu and Yuncheng, Shanxi.

6. Zhongdan 909 corn species: suitable for summer sowing in Henan, Shandong (except Binzhou), Guanzhong Irrigation District of Shaanxi, Yuncheng of Shanxi, northern Jiangsu and northern Anhui (except Huaibei). Use with caution in areas with high incidence of powdery mildew.

7. Denghai 605 corn species: suitable for summer sowing in Shandong, Henan, central and southern Hebei, northern Anhui, Shanxi Yuncheng, and suitable areas of Inner Mongolia Autonomous region, Shaanxi Province and Zhejiang Province. Brown spot and southern rust are used cautiously.

8. Weike 702 corn species: suitable for spring sowing in late ripening areas of Jilin, middle and late ripening areas of Shanxi, Tongliao and Chifeng areas of Inner Mongolia, Yan'an of Shaanxi and Tianjin; summer sowing of Henan, Baoding and south areas of Hebei, Shandong, Guanzhong Irrigation area of Shaanxi, northern Jiangsu and northern Anhui; spring sowing of Gansu, Ningxia, Xinjiang, Yulin of Shaanxi and western Inner Mongolia.

9. Suyu 29 corn species: suitable for spring and summer sowing in Jiangsu and Anhui and spring sowing in Jiangxi and Fujian provinces.

10. Shengrui 999 corn species: suitable for summer sowing in Baoding and the south of Hebei Province, Henan, Shandong, Guanzhong Irrigation District of Shaanxi, northern Jiangsu, northern Anhui and southern Shanxi. Use with caution in areas with high incidence of rough shrinkage disease and tumor powdery mildew.

11. Yuyu 30 corn species: suitable for summer sowing in Beijing, Tianjin, Hebei, Henan, Shandong, Guanzhong Irrigation District of Shaanxi, Yuncheng area of Shanxi, northern Jiangsu and northern Anhui. Use with caution in areas with high incidence of powdery mildew and rough shrinkage.

II. Recommendation of high-yielding maize varieties in southern China

1. Dongdan 80 maize species: suitable for planting in late ripening areas of Liaoning and Jilin, Beijing, Tianjin, northern Hebei, Shanxi spring sowing and Pingba hills and low mountainous areas of Yunnan, Guizhou, Sichuan, Chongqing, Hunan, Hubei and Guangxi, pay attention to the control of underground pests.

2. Yayu 889 corn species: planted in Guiyang City, Zunyi City, Anshun City, Tongren area, Bijie Prefecture, Liupanshui City, Qianxinan Prefecture, Guizhou Province; planting in the middle and high fertility plots of corn producing areas with altitudes of 8-1700 meters in Yunnan Province and spring sowing corn areas of 1800-2200 meters above sea level in the north-central part of Yunnan Province.

3. Chengdan 30 corn species: suitable for planting in Pingba, hills and low mountain areas of Sichuan Province, interplanting or net cropping with wheat.

4. Zhongdan 808 corn species: suitable for spring sowing in Sichuan, Yunnan and Hunan, pay attention to prevent lodging.

5. Tsuanyu 9: it is suitable for spring sowing in Chongqing, Hunan, Sichuan (except Ya'an), Guizhou (except Tongren), Pingba hills and low mountain areas in Hanzhong area of Shaanxi Province.

6. Suyu 30 corn species: suitable for spring and summer sowing in Jiangsu and spring sowing in southern Anhui, Jiangxi, Fujian, Guangdong and Zhejiang. Use with caution in areas with high incidence of stem rot and dwarf mosaic disease.

7. Rongyu 1210 corn species: suitable for spring sowing in Pingba hills and low mountainous areas in Sichuan, Chongqing, Yunnan, Guizhou, Hubei, Hunan, Guangxi and Hanzhong, Shaanxi.

8. Guidan 162 corn species: suitable for planting in the whole region of Guangxi.

9. Yunrui 999 corn species: suitable for cold mountain areas above 1900 meters above sea level in Yunnan Province. Use it cautiously in areas with high incidence of gray spot and sheath blight.

10. Suke Huaguo 2008 corn species: it is suitable to be planted as fresh waxy corn varieties in southern Jiangsu, southern Anhui, Shanghai, Zhejiang, Jiangxi, Fujian, Guangdong, Guangxi and Hainan. Be cautious in the areas where stem rot and dwarf mosaic disease occur again.

III. Recommendation of high-yielding maize varieties in northern China

1. Moral education 919 corn seed: it is suitable to be planted in the middle and late ripening area of corn in Jilin Province.

2. Nong Hua 101 corn species: suitable for spring sowing in Beijing, Tianjin, northern Hebei, Shanxi middle and late maturity areas, Liaoning middle and late maturity areas, Jilin late maturity areas, Inner Mongolia Chifeng area, Shaanxi Yan'an area. Summer sowing in Shandong, Henan (excluding Zhumadian), central and southern Hebei, Guanzhong Irrigation District of Shaanxi, northern Anhui and Yuncheng of Shanxi.

3. Jingke 968 maize species: suitable for planting in Beijing, Tianjin, Shanxi middle and late maturity areas, Inner Mongolia Chifeng and Tongliao, Liaoning middle and late maturity areas (except Dandong), Jilin middle and late maturity areas, Shaanxi Yan'an and Hebei spring sowing areas.

4. Demeya No. 1 maize species: it is suitable to be planted in the lower limit of the third accumulated temperature zone and the upper limit of the fourth accumulated temperature zone in Heilongjiang, the active accumulated temperature of ≥ 10 ℃ in Inner Mongolia Autonomous region above 2200 ℃ and the early ripening area in Yanbian area of Jilin Province.

5. KWS2564 maize species: it is suitable for the cultivation of original SC704 maize in Xinjiang and the cultivation of maize dwarf mosaic disease and head smut in Jiuquan, Lanzhou, Wuwei, Pingliang and other places in Gansu Province, while in the Yellow River diversion irrigation area in the arid zone of central Ningxia, the effective accumulated temperature of ≥ 10 ℃ is 2650 ℃.

6. Dongdan 6531 maize species: it is suitable to be planted in corn areas where the accumulated temperature of ≥ 10 ℃ activity is more than 2800 ℃ in Liaoning Province.

7. Xiangyu 998 corn species: it is suitable to be planted in the middle and late ripening area of corn in Jilin Province.

8. Yu silage 23 corn species: it is suitable to be planted as special silage corn varieties in Beijing, Wuqing, Tianjin, northern Hebei (except Zhangjiakou), eastern Liaoning, central and southern Jilin and the first accumulated temperate zone spring sowing area of Heilongjiang. Pay attention to the control of head smut and lodging.

9. Suiyu 23 corn species: suitable for planting in the second accumulated temperate zone of Heilongjiang Province.

10. Huanong 887 corn species: suitable for spring sowing in the mountainous area of eastern Liaoning, the middle mature area of Jilin, the first accumulated temperate zone of Heilongjiang and the middle mature area of eastern Inner Mongolia.

How much fertilizer should be applied to one mu of corn field?

1. Corn needs to absorb a large amount of nutrients from soil in the process of growth, among which nitrogen and potassium are the most required, generally yielding 100 kg corn grain per mu, absorbing 2.5 kg of pure nitrogen, 1.2 kg of phosphorus pentoxide, 2.0 kg of potassium oxide, and the ratio of nitrogen, phosphorus and potassium is 1: 0.48 per mu. The fertilizer requirement increases with the increase of yield. In general, the whole growth period of corn needs to apply 10-16 kg of pure nitrogen, 3-5 kg of phosphorus pentoxide, 5-8 kg of potassium oxide, zinc, boron, manganese and other trace elements according to the supply of soil nutrients.

2. In potassium-rich areas, the amount of potassium application can be reduced appropriately, and corn is sensitive to zinc, and zinc sulfate (0.1-0.3%) or other zinc-containing foliar fertilizer can be sprayed on the leaves at jointing stage. Corn needs less fertilizer before jointing, the most in the period from jointing to big trumpet mouth, and then decreases gradually. according to this law, the times and amount of topdressing should be adjusted reasonably. Topdressing is generally carried out in two stages, which can be applied twice at the trumpet stage 10 days after jointing and 10-15 days before the heading of corn, with the former light and the second heavier (the proportion is 2:3). The plot of one-time topdressing can be used in the early stage of the big trumpet mouth.