Techniques for cultivating corn crops

Structure of corn crops
A. General characteristics
Corn is a crop called the Zea mays in the Poacea family. Corn is a type
A plant with a stem straightening on top, and the ability to grow to be taller by the type of seed of each corn, corn crop does not have tillage, but if the beaker is slightly broken. For corn is not as resistant to weather as other crops. In Cambodia, because of corn, it is easy to grow, as well as easy to sell and maintain. Maize can grow well at least 30 cm depth of soil. Corn has a female flower and male flowers on the same tree, usually male flowers come out first, and then females come out after the wind blows, mollusks on the females can grow. Corn is long or short depending on the species. Some of them are 90 days, 100-130 days old. For corn in Cambodia we are only 85 days, 90-100 days. Usually a single, single-sided plant, no bruised or peeled. However, in some cases, many original stems can be created. The height of the stem usually ranges from 1.5 meters to 3 meters. In South America, some corn seeds were found to be 9 meters high. There are nodes in each node that grow about 1 meter in length and about 10 cm in diameter, and the seeds are rowed in rows around the nucleus, producing different colored and varied fruit depending on the variety.
B. Root system

Corn is a plant in the family poacea or Gramincea, a vermilion without root, ie, only the lens of the lice, and the roots can grow according to climatic conditions and climate .The root system of the corn crop is divided into three types: roots, shoots, roots and roots Reference:

A. Root sprouts
The roots form part of the seed, which emerges from the first part of the embryo (derived from the seed’s radicals). Such roots begin to grow during germination. The function of the roots has a secondary role in absorbing water and other organs, in order to prevent the plant from falling when it first emerges. The root or roots of the shoots are dead, during which the corn has 6-8 roots.

B. Essence
The roots are the roots that descend from the first node of the underground root. The roots take place during the corn crop of 3-4 sheets. In the growth stage, the root of the node shines horizontally to the substrate to the upper layers of soil and then replicates into the ground in a vertical motion. The roots grow in all places in the soil at depths of 2 cm to 3 cm, according to the original state. In addition, a few roots can be injected into the soil of 2 meters. The roots can be spread over a 60-centimeter strip and have nutrients, nutrients and nutrients, as well as nutrients that can be deep into the soil. In addition, this type of roots can absorb 60% oxygen from air and atmospheric moisture.

C. Root Reference
The roots can be seen from the nodes of the root stem of the corn on the surface layer, ie, the second node up to the node 4. These roots are much larger than the soil we need to stem so that it is able to absorb water and nutrients or to support the stem. The root system as well as the root system also grows up to the milking stage. The capacity of the roots without absorption of nutrients from the soil is terminated at full ripe fruit. With the growth of the root system, it is closely related to the yield of corn, if the root system is immersed into the soil, it can facilitate corn crops to control the stem in the drought and other nutrients. C. The stalks usually have a height of 2-5 meters. For some other species, only 40-50 cm in height, in some areas, some of the corn varieties can reach up to six meters. This height depends on climatic conditions, soil and breeding. Rounded at the base and upper part of the stem. On the original slopes, nodes and nodes are generally 21, but sometimes the variety of variants vary from 8 to 38. In general, corn is a non-tootropic plant, we observe only one solitary tree, but it can be case-priced with 2-3 trees. On the root node of the root 2-5, the node may have a cobbler and a reference root. On the nodes there are leaves and tackles and in corn stems filled with soft tissue soft tissue and stiff fibers, and primitive lining on the outside.

D. Leaves, leaflets grown from nodes, alternate shaped, acute, tip at the edges of thorns or throat, with a central stem in the middle of the leaves and have long fibers of small leaves, leaves are 30-150 cm long. In one stems have leaves from 8-38 average on 12-18 leaves. It varies depending on the variety between seedlings and the cultivation techniques. The leaves play an important role in the absorption of carbon dioxide for other photosynthesis in the surface of the compound, so that we can identify the nutrient deficiencies and defects on the shape of the leaves. V leaves are divided into three parts

Layer-coated layers
Leaf tongue
Leaf and trunk
E. Cornflowers, corn is a plant that has flowers on a single stem, but female flowers and males are in different locations. The male-shaped flower at the end of its stem is a type of flower, with many small flowers around the flower. Twist.

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