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, and are resistant to drought and drought. The main target of seedling management is to promote roots and seedlings, strive for Miao Quan, Miao Qi, and Miao Zhuang to lay the foundation for high yields. Management measures are as follows:
Check seedlings and make up seedlings. After the emergence of the seedlings, they should often go to the field to check the seedlings and find that the seedlings are replanted or transplanted in time. Before the three-leaf stage of maize, it was found that more than 3 strains (acupoints) were continuously seedling-repaired, and seedlings should be promptly filled. The method of transplanting seedlings with soil could be adopted to reduce the difference in seedling potential between the plants. After transplanting, it should be watered in time to shorten the time for seedlings to ensure survival. For the replanting and transplanting of corn seedlings to partial water partial fertilizer, promote its rapid growth, to Miao Qi, Miao Zhuang.
Miao seedlings, Dingmiao. 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. Seedlings of maize seedlings were seeded once at 3 leaves and seedlings at 5 leaves. When young seedlings and young seedlings are to be removed, weak seedlings, weak seedlings, large seedlings and hybrid seedlings are removed, and the uniformity of the group is improved. The time should be selected in the sunny afternoon, since diseased seedlings, insect biting seedlings, and poorly-developed seedlings are easy to wilt at this time, which is easy to identify and eliminate. .
Cultivate, plan. Intertillage is an important measure for corn seedling management. Corn seedling cultivator can break the soil compaction, promote the roots under the bar, improve seedlings light transmission conditions. Generally 2 to 3 times can be performed. Before the seedlings are dwarfed, they can be cultivated once, and they should be avoided when cultivating. The cultivating depth should be 3-5 cm. The seedlings should be shallow and the rows should be deep.
Topdressing Miao Fei. Fertilizers at the seedling stage have functions of promoting roots, strengthening seedlings, promoting leaves, and strengthening culms. Usually after the seedlings to the jointing stage. Organic fertilizers, phosphate fertilizers, potash fertilizers, and trace fertilizers should be applied as early as possible during the seedling stage combined with cultivating. High-yielding fields require 55 kg of standard phosphate fertilizer, 25 kg of standard potassium fertilizer, 1 kg of zinc sulfate, and 30 kg of nitrogen fertilizer per acre. Middle and low-yielding fields also use organic fertilizers, phosphate fertilizers, and potash fertilizers at the seedling stage. The general application of ditch or acupuncture points, the depth of 5 cm or more, from the seedlings more than 10 cm, do not burn seedlings. When topdressing, the weak seedlings and supplementary shoots should be applied with appropriate amount of partial fat. Maize has strong drought tolerance at the seedling stage and generally does not need irrigation. However, in summer, direct-irrigation maize should be timely irrigated when drought seriously affects the growth of seedlings. Watering at the seedling stage should control the amount of water and do not flood the area.
Yankauer Tip,Yankauer Suction Tip,Suction Tip Yankauer,Surgical Yankauer Suction Tip
ShaoXing SurgeCare Medical Products Co., Ltd. , https://www.sxsurgecaremedical.com