Timely replanting and replanting seedlings: To conduct field inspections on a parcel of land, to replant seedlings and supplement plants quickly. One is transplanting seedlings by water. For the plots with less seedlings, large seedlings, multi-grooves, and foot-water transplants were adopted; For late sowing, and large area of ​​lack of seedling land, take the bud to sit enough water to make up; third is seedling transplanting. For early sowing, large leaf age, and lack of seedlings, the use of early-maturing varieties to promote buds, greenhouse nursery, promote rapid growth of corn, until the seedlings grow to 3-4 leaves when the water transfer plant. Early Miao Ding Miao: When 3-4 leaves of the corn, weak seedlings, diseased seedlings, and seedlings should be removed. The appropriate density should be determined according to the variety characteristics and planting methods, and the seedlings should be equidistantly equidistant. Do a good job shovel: After the emergence of corn to implement a shovel before the shovel a plow (pull ditch), the depth should be more than 25 cm, spade every 10-12 days, the entire reproductive period to do three shovels three times, to increase the temperature , eliminate miscellaneous kill grass, promote early-onset fast-growing seedlings. Early application of fertilizer: According to the characteristics of varieties and yield indicators and maize growth and other requirements, early scientific fertilizer. For better fertility, when the corn 6-7 leaves, combined with shovel to recover urea 15-20 kg / acre, top dressing to do deep side dressing, side 10-12 cm, depth 10-15 cm. For the weak seedlings, the base fertilizer, base fertilizer, and seed fertilizer are not applied at a high level. Especially for the land with poor soil conditions, the second fertilizer can be applied. However, the top dressing time should not be too late. Potassium dihydrogen phosphate and urea can also be used to dilute the water. Foliage spraying, or the use of liquid fertilizer and other methods to improve seedling quality. Timely removal of mites: There is often a large number of tillers before and after jointing of corn. In order to reduce nutrient consumption, promote the good reproduction of individual corn plants, and make the main stem have a good reproductive environment, check at any time to find out the tillers, remove them in time, and avoid competition with the main stem for nutrients. And moisture. Scientific weeding: Promote agronomic practices such as shoveling, and post-emergence application of herbicides to control grassland. For corn plots, 2-3 hormones such as 2.4-D butyl, 2 A, 4-chloro and other hormonal herbicides are forbidden in corn at the 3-5 leaf stage; cyanosulfuron 4% (80 ml) can be used before the 6-leaf stage. +38% Atrazine (150 ml) was used for chemical weeding; plots older than 6 leaf stage or large grass age and high density could be manually weeded. Reasonable control: For plots with normal fertility progression and excessive planting density, 9-11 leaf segments of corn can be controlled by local control agents such as Tengtianbao to shorten internodes, strong stalks, and prevent late lodging and stem folding. . Insect pest control: Closely monitor the dynamics of insect pests, conduct field inspections, and take effective measures to control pests. Gold worms and locusts can be rooted with 50% phoxim 500 times or 40% chlorpyrifos 1500 times. The two leafhoppers, thrips, root flies, and whiskers can be treated with 3% acetamiprid EC 50 ml/mu. The ground tigers can pile up grass at intervals of 5 meters in the early seedling stage, and spray 300 times of liquid 80% dichlorvos on the bottom of the pile to kill the larvae. China Extract Powder For Use As Dietary Supplement Extract Powder, Extract Powder Manufacturer Shaanxi Kang New Pharmaceutical co., Ltd. , https://www.apipepdites.com