Comprehensive measures to improve the yield and quality of corn seed production 1

Zheng Wenjiang (The Xinjiang Production and Construction Corps Agricultural Fourth Division 66 Seed Station)

The Xinjiang BINGTUAN Nongsishi Reclamation Area is located in the Valley of the Upper Valley of the Yili River in the western Tianshan Mountains of Xinjiang. The annual average temperature of the valley plain is 7.9-9.2°C, the frost-free period is 160-180 days, the average annual temperature of the valley is 5.4-7.5°C, and the frost-free period is 110-150 days, ≥ The annual accumulated temperature at 10°C is 2900-3700°C. It is rich in surface water resources. It is a typical irrigated agriculture with a sunshine duration of 2500-3500 hours. There are 21 agro-pastoral groups and 1.5 million mu of cultivated land. The unique natural resources and the semi-militarized management system of the Corps have enabled our division to rapidly develop the seed industry, and developed from a few hundred acres of foreign reservations in 1995 to 100,000 mu in the past five years. In order to enlarge and strengthen the seed-breeding industry in the Yili District, and promote the high yield of the seed corn, it is necessary to formulate necessary measures to change the production conditions so as to ensure that the key factors affecting the yield and quality of the seed in the production process of the hybrid seed production of maize Strengthen field management, ensure prompt and rapid dehydration, and produce high-quality seeds with high purity and good quality.

1 selection

Farming must be based on fields that are safe for isolation, fertile soil, flat terrain, uniform fertility, and drought and flood protection in order to guarantee seedlings, seedlings, and seedlings.

2 heavy base fertilizer

The production of base crops should be increased enough, and nitrogen, phosphorus and potassium should be used to meet the needs of the seedling stage for fertilizer and water, and to promote early growth of seedlings. Base fertilizer is the basis for improving seed production. Therefore, formula fertilization should be based on soil nutrient status.

3 Timely early sowing using mulching techniques According to the climate characteristics of early spring temperatures in Ili-eup area growing faster, more wind and faster soil run, we must make full use of timely sowing in early spring. The specific time should be based on soil, ground temperature, lyrics, topography, varieties, etc. The situation is determined. When sowing, it is necessary to select high purity paternal seeds and coat them in order to reduce the low temperature and cause bad seeds. Seed germination can also be carried out and the seeds sown when exposed. The germinated seeds reduce the water absorption process in the soil, and the seedling emergence is quick and uniform, reducing the mildew caused by low ground temperature. However, germination sowing must master the soil sensation, and when the sensation is poor, germination should not be sown. The use of mulching and seeding is an effective measure to increase the yield and quality of corn seed production. One of its benefits is to increase the temperature, increase the accumulated temperature in the corn growth period 300 ~ 400 °C, early sowing than open air for about 10 days; the second is to protect the soil and fertilizer effect is good, significant drought resistance; third is to strengthen the corn photosynthetic area to ensure that the seedlings Full, Miao Zhuang, Miao Qi, reduce tasseling time, help to improve the purity of seeds, and early maturity, to solve the problem of seed dehydration in the later period.