How to increase the yield of corn? A Summary of 5 measures to increase Maize production

Corn occupies a very important position in China's planting industry, so in order to improve the yield and quality of corn, in order to increase the income of farmers, we must actively explore the planting technology of corn, how to improve the yield of corn? Next, let's take a look at five major measures to increase corn production.

1. Defoliation when the corn seedling grows to 5 leaves, cut off all the plants above the first leaf with a blade, and remove the first leaf by hand. At this time, the growing point of corn seedlings is still below the soil surface, so the next day after defoliation, the plant will grow new leaves. The stalk diameter, stable length and bald tip of the corn after picking leaves are less than those without leaves, and the yield can be increased by 30%.

2. in the middle and later stage of silking in the whole corn field, the tip was folded into an angle between the second and third leaves of the plant, but could not be broken, and the broken stem nodes could be restored to their original state in two to four days. Through practice, by using this method, the empty stalk rate of corn can be reduced from 15% to 5%, with an average increase of 15% per mu by 25 kg.

3. The squatting seedlings were carried out after setting the maize seedlings to before the male ear differentiation of the jointing corn.

The specific measures are as follows: under the condition of good soil moisture in maize seedling stage, measures such as controlling irrigation, ploughing for many times, ploughing roots and drying soil are taken to promote the development of root system and control the overgrowth of aboveground parts, so as to make the base of maize seedlings sturdy and stout, which is beneficial to drought resistance and lodging prevention. The index of squatting seedlings should be mastered that the leaves of corn curl at noon on a sunny day, the leaves are dark green, and the leaves resume to stretch in the afternoon or evening, and the leaf tip is not watered the next morning, if the leaves are not extended from afternoon to the next morning, and the leaf tip does not have water droplets, that is, the squatting seedlings should be ended, and the soil moisture should be controlled at more than 50% of the field capacity.

The maize plants after squatting seedlings had stout stalks, many roots, deep into the soil, rapid growth after jointing, thick and short basal internodes, more aerial roots, early female ear appearance, large ear size and low ear position, less bald tip, more grains and high yield.

However, corn squatting seedlings should be in accordance with local conditions, squatting time is short, can not play the role of squatting seedlings; squatting time is too long, serious water control, seedling aging, will also cause adverse consequences. Should master squatting small not squatting old, squatting strong (ground ability is high) not squatting thin (barren), squatting black (seedling color thick green), not squatting yellow (seedling color yellow weak), squatting wet (soil moisture) not squatting dry (lack of moisture), etc., in order to receive good results.

4. Castration is a simple and easy measure to increase yield when the male ear of corn is just taken out and the male ear of some plants is removed manually according to a certain proportion. After castration, the nutrient consumption of the plant is reduced, the nutrients for the male ear flowering are transferred to the female ear, and the corn borer can be controlled.

The specific method is: every morning when the corn enters the heading, the ear that has just been pulled out is pulled out. The proportion of male removal can be used to remove male by interrow, or by 1 row every 2 rows, or by the same row. No matter what proportion is used, the number of plants in the whole field should not exceed 30% 50%, and several rows near the ground should not be emasculated so as not to affect pollination.

5. Artificial pollination of pollinated corn can satisfy the fertilization of late filaments at the top of the ear, overcome the influence of adverse factors, reduce baldness and lack of grains, and achieve large and full grains. The increase in production is 8%, 10%.

The specific method is: when the corn flowering period, at 9-11:00 in the morning, with a long rope two people pull for pollination, or make a T-shaped ruler frame, move around in the field to touch the male ear, so that pollination, to ensure late pollination. It can be carried out once every other day, once a day in the later stage of flowering, and three to four times a day to meet the requirements of pollination. Removing the empty plants in the field in time after heading and flowering can increase the light intensity, reduce the consumption of water and nutrients, and increase the grain weight.