1, check the seedlings, make up the seedlings
Summer corn seedlings should be checked immediately, fill seedlings. Reseeding seeds should be soaked and germinated first to promote early emergence. If the replanting corn cannot keep up with the seedlings that were sown and grown, the method of transplanting seedlings can be used. Transplanting time should be in the afternoon or cloudy day, preferably transplanting with soil in order to facilitate the return of seedlings and improve the survival rate.
2, seedlings, Dingmiao
The work of thinning and fixing seedlings is usually carried out in the 3-4 leaf stage. Since the corn is in the "weaning period" before and after the 3-leaf stage, good lighting conditions are required. If the plants are overcrowded at the seedling stage, the roots of the plants will be staggered and there will be disputes. Water fights the phenomenon of fertilizer. According to tests conducted by the relevant agricultural scientific research department, the summer maize seedlings in the 5-9 leaf stage will be set at 3 to 9 leaf stages, and the yield per hectare will be reduced by 14% to 27%. Therefore, the work of thinning and fixing the seedlings should be carried out as soon as possible. The timing of seedlings and seedlings should be in sunny afternoons. Seedlings, insect bite seedlings, and stunted seedlings are vulnerable to wilting in the afternoon to facilitate identification and elimination. For those seedlings with dense leaves, dense leaves, dark and green leaves, and black and green leaves, they should be completely removed.
3, seedlings strong
Seedlings should start from the seedling stage and end before jointing. The seedlings should master the principle of “black not black, yellow fat, no fat, not dryâ€. Interplanting corn seeding growth conditions are poor, generally not suitable for seedlings. Should do a good job of water and fertilizer management, promote weak and strong.
4, weeding weeding
Corn cultivating in seedlings can generally be carried out 2-3 times. Before the seedlings are dwarfed, the first cultivator can be carried out, and the cultivator should avoid squashing. The cultivating depth should be 3-5 cm. The seedlings should be shallow and the rows should be deep. Although the intertwining will cut off some of the fine roots, it will promote new roots and control the prosperous part of the ground. Interplanting maize fields are generally hardened at the seedling stage, and they should be cultivated in time after wheat is harvested, and the wheat stubble should be removed and the compaction should be removed.
5, top dressing
According to research, phosphate fertilizers are best applied before the 5 leaves. Therefore, phosphorus, potash and organic fertilizers should be applied as soon as possible before and after seedling cultivation.
6, pest control
There are many types of corn pests at seedling stage, especially summer corn. At present, the main pests that threaten maize during the seedling stage are earthworms, aphids, thrips, cotton bollworms, tiger moths, and wheat flys. The insect pests should be promptly monitored and reported, and pests should be promptly controlled. Http://
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