Keeping seedlings missing After emergence, corn must be checked for seedlings in time. Before the three-leaf stage of maize, it was found that three consecutive seedlings (acupoints) or more should be seeded in a timely manner to make up the seedlings. Methods for making up the seedlings are as follows: 1. Supplementing sowing (soaking and germinating and sowing); 2. Planting and transplanting seedlings, and timely watering after planting , Shorten the time for seedlings to ensure survival. Dingling timely Appropriate time seedlings and seedlings are the key to reduce the rate of weak plants, improve the uniformity of the population and ensure the appropriate density. Corn grows fast and should be planted in a timely manner. Too late to planting seedlings will result in mutual crowding of the seedlings below the ground and on the ground. The nutrient area of ​​the individual plants will be reduced to compete with each other and the water will affect the healthy growth of the seedlings. Therefore, it is necessary to cultivate the seedlings as early as possible and keep the seedlings as early as possible in the sunny afternoon. The main methods are as follows: 1. The time of thinning is carried out on the 3 leaves. The principle is to keep thin and thin, keep the strong seedlings between the weak seedlings, and leave the healthy seedlings for the sick seedlings. 2. Dingling time should be carried out when the seedlings grow to 5 leaves. 3. Fields with poor soil moisture and heavier insect pests should be appropriately delayed in order to avoid dead seedlings and seedlings, resulting in insufficient seedling trees and affecting yield. Weeding and weeding After maize emerged, due to the increase of temperature, weeds and seedlings grew synchronously, and the evaporation of soil moisture was large, and yellow seedlings and dead seedlings appeared. Early cultivating and weed removal can remove weeds to loosen the air circulation, promote the deep rooting of maize roots, facilitate soil microbial activity, promote soil organic matter decomposition, and increase soil nutrient availability. The number of weeds in the mountain corn seedling period is not less than two. The first combination with the Dingmiao mainly controls the principle of “shallow seedlings are on the sidelines and deep in the rowsâ€, and is divided into “grass nest grassesâ€; the second time in the jointing stage, it is combined with topdressing. This time to deepen, cut off the fine roots that extend into the lines, promote the emergence of new roots and deep rooting. Expand the absorption surface. In combination with topdressing, earth is cultivated to form distinct ridges and furrows. Earthing can promote the growth of aerial roots, enhance the lodging resistance of corn, deeply weed, reduce the consumption of nutrients and water, and help prevent waterlogging. Cultivating fertilizer Miaofei topdressing has the functions of promoting roots, strong seedlings, promoting leaves, and strong stalks, and is generally carried out at the jointing stage after the setting of seedlings. The method and time for the topdressing of Miao Fei shall be determined according to the conditions of the seedlings and soil fertility: 1. For the three types of seedlings, transplanted seedlings, weak seedlings of different heights in the same field are used for the growth of the seedlings to 5 leaves. Ammonium applied partial fertilizer to water, which promoted the growth of weak seedlings throughout the field. 2. Topdressing joint fertilizer can make up for lack of soil nutrients and promote the formation of strong stalks and big spikes in corn. The period of top-dressing fertilizer is visible leaf 6.5-7 leaves, about 35 days after sowing. The jointing fertilizer should be based on available nitrogen fertilizers, and the mulching of urea should be 20 kilograms, and earthing should be carried out. 3. The film-covered corn should be topped with 20 kg of urea and cover the hole with soil. Pest control The main insect pests during the seedling stage are ground tigers and armyworms. The control tiger can be used to kill larvae with 50% Bataan WP and rice bran or wheat bran (1:50). Mythimna separata can be used as a poisonous soil with 2.5 kg of fine powder and 15 kg of fine soil. PU Coated Gloves,PU Coated Hand Gloves,PU Coated Work Gloves,Polyurethane Palm Coated Gloves Jiangsu Hespax Security Co., Ltd , https://www.hespax.com
Summer Maize Seedling Maintenance Management
The period from the sowing of seedlings to the jointing stage of maize is the seedling stage. Maize seedlings mainly consist of long roots, increased leaves, differentiation of stems and leaves, and are the periods that determine the number of leaves and the number of nodes. The main target of seedling management is Miao Quan, Miao Qi, Miao Zhuang, pseudo-stem flat, plant dwarf, dark green leaves, and well-developed roots. Corn seedlings should do the following management: