? How should seedlings be planted before planting sweet corn?

From the point of view of the sweet corn varieties that have been planted in our country, there are three main categories, one is the ordinary sweet corn, the sugar content of the kernel milky ripe at about 10%, the kernel matured in a transparent crumpled; the second category is the super beet corn, the sugar content of the ripening period reaches 20% or more, more than twice as high as the ordinary sweet corn, the flavor of its flavor, crispy, sweet, tender and tasty, mainly as a fresh food, the kernel ripened after dehydration The third category is to strengthen the sweet corn, sugar content between ordinary sweet corn and super sweet corn, which has high water-soluble polysaccharide content and high utilization value. Each region should be selected according to the local market needs of the right varieties.

a

1 planting stubble and seasonal arrangements

Sweet corn sown in early March, planted in early April, late June to early July harvest; four season beans in mid-to-late July direct broadcasting, the beginning of the harvest in early September, can be harvested in early October, that is, the mountains before the frost.

2 with the principle

2.1 the use of small arches + film insulation technology, improve ground temperature, early seedling

fresh sweet corn using small arches + film cover early seedling, spring temperature rebound, move the seedlings planting, which is conducive to the fresh sweet corn harvest in advance, early listing, increase economic benefits.

2.2 The use of high altitude and low temperature conditions in the mountains, planting anti-seasonal beans

Low altitude beans at the foot of the mountain Qingming (around April 5) sowing, harvesting in mid to late June pulling seedlings. High altitude four season beans harvested in September, supplying vegetables in the fall light market.

b

3 Yield and benefit analysis

Single-season planting of dry hybrid corn or soybeans, 667 m2 yield (dry) about 450 kg, 120 kg, respectively, the output value of 1,080 yuan, 720 yuan, excluding the cost of net income of about 530 yuan, 370 yuan. Fresh sweet corn - four season beans mountain stubble cultivation, per 667 m2 total output of 2 300 kg, total output value of 6,100 yuan, excluding the cost of net income of about 3,500 yuan, is a single-season planting of dry grains of net income of 6 to 9 times, the economic benefits are very considerable.

Sweet corn cultivation points;

1, isolation planting sweet corn and ordinary corn crosstalk, pollen will occur after the phenomenon of direct sensation, reducing the quality of sweet corn, so it should be planted in isolation to prevent crosstalk.

2, fine sowing sweet corn seed due to less starch content, grain thin, top soil ability is poor, not easy to reach the full seedling, strong seedling standard, therefore, in the pre-sowing of fine ground preparation, selection of seed, selection of moisture in good condition sowing, and the depth of sowing is not more than 3 cm.

3, pest control Sweet corn from sowing to harvesting pests, especially the spike pests, the principle of prevention and control is more important than cure, biological control is the main, drug control is supplemented, especially prohibit the application of residual period of long highly toxic pesticides.

c

4, timely harvest Harvesting Harvesting period is generally about 20 days after pollination, the field standard for the spike beard black, full of grains are not concave when harvested.