Corn is one of the three major food crops in China, and it is also the main field crop. The high-yield corn cultivation technology is one of the subjects that agricultural workers are unremittingly exploring. First, variety selection and seed coating. 1. Choose good varieties according to local conditions. According to the local light and heat resources and cultivation system, the suitable varieties are selected. The selected varieties require high yield, high quality, wide adaptability, multi-resistance and high seed quality. The quality of Haihe brand corn hybrids is well-known both inside and outside the province. It is the first choice for farmers' friends and rest assured. The Haihe series of corn varieties have various maturity stages and are suitable for various forms of cultivation such as clearing, specific space and mulching. 2, the mulching film cultivation selection varieties should be 10 days - 15 days longer than the local bare corn growth period. 3, seed coating: seed coating agent contains insecticides, protective agents, drought-resistant agents, trace elements, etc., effectively control seedlings of underground pests and head smut and other soil-borne diseases, so that Miao Qi Miaojian, for high yield lay the foundation. Second, fine land preparation, timely pressure protection. The soil is intensively cultivated to achieve a soft, finely divided, smooth soil, good permeability, and improved water retention and fertilizer retention performance. After the land preparation, the pressure will be kept in time. Third, timely broadcast early, improve the quality of planting. 1. Timely early broadcast can make full use of the light and heat resources in early spring, miss the period of occurrence of pests and diseases, miss the high temperature and rainy weather of flowering, make the grain fully mature and increase the grain weight. 2. Improving the quality of sowing is the main measure to ensure Miao Qi and Miao Zhuang. The plant spacing is consistent, the ditch depth is consistent, the thickness of the covering soil is consistent, and the cracking is timely after sowing. 3, the film cultivation must be pressed tightly, to prevent the wind from uncovering the film. Haicheng filming time is in mid-April, and northern Liaoning and western Liaoning and southern Jilin should be around April 20. Fourth, rational close planting, establish a good group structure According to the characteristics of the variety, production conditions, management level, soil conditions, cultivation methods, etc., the appropriate density is determined, so that the number of ears per pan, the number of grains per panicle, and the grain weight are coordinated with each other to give advantage of the group. For example, Qinghai Haihe No. 1 density is about 2700-2800; Haihe 2 is 2700-2800/mu; Haihe No. 4 is 2500-2800/mu, Haihe No. 10 is 2500-2800/mu; Wo 2 No. 2800-3000 plants/mu; Haihe No. 13 2800-3000 plants/mu; Haihe No. 14 3300 plants/mu (Liaoning), 3500 plants/mu (Tianjin summer sowing), 3000 plants/mu (Jilin) . 2,800 plants/mu of Haihe No. 15 is suitable. The mulching cultivation density is planted with reference to the empty space. V. Strengthen field management to ensure increased production and income (1) Set the seedlings early, and weaken and stay strong, so that the difference in population growth is small, and the number of non-self-crossing plants in the field is reduced. (2) Strengthen the cultivating and weeding, timely shovel, Haihe 1, 2 genera stalks and high-stalk varieties, do a good job in seedlings, prevent lodging in the middle and late period. (3) Seed formula fertilization According to the fertilizer requirements of jade materials, such as soil fertility level, the base fertilizer is applied, the seedling fertilizer is early, the ear weight is heavy, and the grain fertilizer is supplemented; N, P and K are mainly combined with Zn and Mn micro-fertilizer. Specific practices: foot-based fertilizer, 1000-1500 kg of high-quality decomposed agricultural fertilizer, 10-15 kg of urea, 20-25 kg of diammonium phosphate, 15 kg of potassium sulfate, 1.5 kg of Zn fertilizer, and 1 kg of Mn fertilizer. Cleverly topdressing fertilizer, 15-20 kg of urea, 30 kg of ear fertilizer, 5 kg of grain fertilizer. (4) Strengthen water management. To achieve dry irrigation, you can row. (5) Artificial assisted pollination. In the case of strong winds, high temperature or continuous rainy weather, artificial assisted pollination can be carried out. The specific method: After 9:00 am on the sunny day, fresh pollen is collected after the dew is dried, the hull and anther are removed, and the filament is given with a brush and a little powder. On the top, it can effectively increase the seed setting rate and reduce the occurrence of baldness and granules to achieve fullness of the ears. (6) Timely prevention and control of pests and diseases Strengthen the control of corn borer, armyworm, ear mites, etc., and reduce the damage caused by pests and diseases. Sixth, timely harvest More than 90% of the whole plant's stems and leaves turn yellow, and the ears and leaves turn into loose and loose grain, which shows that the grain color of the variety is ripe, and should be harvested in time. Low Residue Void Open Security Labels,Void Security Labels,Void Anti-tampering Labels,Low residue security labels Wenzhou Haoshi Light Industrial Products Co., LTD , https://www.economicseals.com
An effective method for high yield of corn