If corn is planted on the dry ground, how many days will it take to water it?

When the ground is dry, it is best to water the corn within 3-5 days.

Soil moisture content is one of the important conditions affecting the emergence of corn, especially corn intercropped in wheat fields and corn sown in summer after wheat harvest. In China, most previous summer corn crops were wheat, and wheat soil moisture was usually very low at harvest. Watering during the sowing period is the key to high corn yields. It ensures that corn seedlings are full, uniform, strong, ensures density, improves population uniformity, and obtains high yields. After experiments and tests, corn should be watered within 3-5 days after planting in arid areas, and there will be insufficient corn seedlings when sowing corn. The uniformity of plant height in the group is 12, and the yield is 290.3 kg/acre. For planting enough corn, the plant height is 19.44 and the yield is 460.97 kg. When sowing corn, the appropriate moisture content of the tillage soil varies with soil texture.

Therefore, the watering method should be flexibly adopted according to different conditions during the corn sowing period, that is, watering before sowing or covering with water after sowing. Watering before sowing is suitable for spring corn, corn interplanted in wheat fields or corn sown earlier in summer. Spring corn should be watered in winter or early spring. Winter watering can not only prevent the soil temperature from lowering during sowing, but also avoid conflicts in water competition among various crops in spring. Interplant corn with wheat fields and pour wheat yellow water to achieve one purpose and two purposes. Summer corn and wheat are watered immediately after harvest, and preparation for sowing is characterized by planting first and then watering. This is an effective way to strive for early sowing and early harvest, and is suitable for sowing corn or sowing seeds in summer. Sow wheat immediately after harvesting the soil and then water it.

Before corn emerges from seedlings to jointing, it is generally not watered under the conditions of sufficient water distribution at the bottom and sufficient emergence of seedlings, in order to facilitate the deep development of the plant root system and enhance its resistance to water stress and water resistance. ability. In the middle and late stages, when corn is planted in wheat fields, if the seedlings are weak due to the influence of previous crops, there is insufficient fertilizer, and the soil is insufficient, top dressing should be combined to promote timely watering of the seedlings. After jointing, the water consumption of corn plants increases. In the case of insufficient rainfall, water should be watered in time to increase the absorption of soil nutrients, enhance the photosynthetic ability of leaves, promote the accumulation of dry matter and stem development, and lay the foundation for reproduction. Organ development. The Farmland Irrigation Research Institute of the Chinese Academy of Agricultural Sciences determined that watering during the jointing stage of corn has a significant impact on increasing plant height, stem diameter, leaf number, leaf area per plant and dry matter weight, with a higher yield increase of 17% to 22.1%.