Selection of high-yield corn

The growers' requirements for corn varieties are very simple, that is, high yield and good harvest. To achieve this goal, corn varieties should have the characteristics of high comprehensive resistance, strong resistance, low cost, and high benefits. The analysis is as follows.

(1) Top soil strength. The top soil ability of the variety is strong, and the seedlings can be preserved after sowing. It is not necessary to spend time and effort to check and supplement the seedlings, especially when the quality of the land preparation is poor and the labor force is low.

(2) Infertility resistance. Especially in mountainous or hilly fields, due to poor soil, low organic matter content, and low input of chemical fertilizers, high-yield varieties with high tolerance to infertility are required.

(3) Drought tolerance and waterlogging tolerance. Spring drought, summer waterlogging, and autumn drought are common phenomena, often leading to a decline in corn production. The varieties are resistant to drought and waterlogging, and the bumper harvest is more secure.

(4) Disease resistance. Small spot disease and bacterial wilt disease are quarantine diseases in the Huanghuaihai area. Diseases such as large spot disease and contraction disease have also occurred in recent years. Corn prices have fallen in the past two years, it is difficult for farmers to sell grain, and corn quality

With more and more attention, ear rot has become a fatal weakness that hinders quality.

(5) High temperature resistance. In the Huanghuaihai summer sowing area, corn often encounters high temperatures during flowering and pollination, which affects the seed setting rate, resulting in a decline in yield and requiring varieties to withstand high temperatures.

(6) Anti-lodging. In recent years, mechanical harvesting has become a trend, especially the follow-up of mechanical harvesting of grains, which requires that the variety's lodging resistance must pass.

(7) Fast dehydration. With the transfer of land and the expansion of planting scale, the difficulty of drying grain will become an obstacle to the quality of corn. Of course, this problem can be solved by mechanical drying, but the relative increase in cost requires fast dehydration of the ears and grains. In this sense, the market space for live stalk mature varieties will become smaller and smaller.

(8) Stability. Inter-annual output must be relatively stable, otherwise growers cannot choose varieties.

(9) The cultivation technique is simple and easy to operate.

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