What are the key technical points of field management of autumn potato?

Autumn potato is one of the important food crops in late autumn. In order to achieve the goal of "big spring loss and late autumn compensation", various localities have made great efforts to develop Qiu Yangyu production. At present, the sowing and planting of autumn potato is basically over and has entered the stage of field management. So what are the key technical points of autumn potato field management? Let's take a look at it with the editor of Tuliu.com.

I. timely inspection and replenishment of seedlings

Timely inspection of seedlings and replenishment of seedlings for those who lack nests and lack of seedlings due to poor germination or rotten seeds of seed potatoes, the method of evenly filling thin or preparing seedlings can be taken to check the gaps of seedlings in time to ensure the whole bacteria.

Second, timely ploughing and weeding

Due to the short sunshine in autumn, topdressing is suitable for tuber growth, and the plants bear potatoes early and are not easy to grow, so the management should be mainly to promote bacteria. In order to promote the drought and rapid growth of potato seedlings, weeds should be weeded in time after finishing seedlings, and according to the situation of seedlings and the application of base fertilizer, 2-3 kg urea was applied once with clear water per mu according to the situation of seedlings and bottom fertilizer application; about 30 days after emergence, 50 kg potassium dihydrogen acid solution was sprayed twice with an interval of 7 to 10 days, and the soil was cultivated in the base chamber. Straw-covered autumn potato does not need to be ploughed and weeded during the growing period.

III. Drought and waterlogging resistance

Before and after the emergence of autumn potato seedlings, anti-early drainage must be done in time in order to promote bacteria and protect bacteria. The drought in the sowing period of autumn potato in our province was relatively serious in 2006, so we should pay attention to watering after sowing to keep the ridge moist until the emergence of seedlings; for individual fields with high humidity in the field, we must use deep ditch and high dehumidification. After the emergence of seedlings, there is no need to water long ago: in case of continuous rain, it is necessary to clear the ditch and drain in time to prevent waterlogging and dehumidification.

IV. Pest control

Pay attention to the prevention and control of bacterial wilt, found that diseased plants should be pulled out and sold in time. Late blight has a great influence on the yield of Qiuyang characters, so it is necessary to strengthen observation and control in time. During sowing or seedling stage, internal inhaling pesticides such as Jiasuangling or Dysenwu zinc can be used at one time, plus 2 kg / mu of carbon (applied to root soil). In the middle and later stage, when central diseased plants are found in the field, the diseased leaves should be pulled out or removed immediately to destroy them. 25% Ruidu requires 600 times solution of manganese and zinc or 72% kettle 700-800 times liquid and other spray plants for control, and control twice every 10 days for 3 times. At the same time, eggs should be added to check the bugs. If it happens, spray aldicarb 3000 times in time.

five。 Timely harvest

It is generally harvested in time before the arrival of the first frost. under normal circumstances, it can be harvested in mid-December and late December. For autumn potato covered with straw, just open the straw and pick back the potato pieces on the soil. Farmers with labor permission can adopt the method of harvesting by stages according to the market price or need, that is, gently pluck the straw away, harvest the grown potato, cover the straw, and let the small potato continue to grow, so that it can be put on the market in time and increase income.

All right, the above is the autumn potato field management technology brought by the editor of Tuliu.com. Friends who like can follow Tuliu.com for more information. I'll see you next time.