Autumn seed foundation and current pipe technology

I. The basic characteristics of planting rapeseed in 2003 in Songjiang District

1. The quality of farming is better. As the first half of November is harder and easier for agricultural machinery to go to the fields, about half of the wheat fields are planted by shallow tillage. Shallow ploughing can eliminate weeds, increase temperature, and reduce dew-seeds; Two wheat and most rapeseed were planted with no-tillage so that soil physical properties were better.

2. Ditch system support. Most of the wheat field blocks this year will be covered by machines and trenches. According to the survey, on average, there are about 8 vertical grooves and 2 horizontal grooves in each wheat field.

3. Basal fertilizer is more than enough and nitrogen and phosphorus are used together. According to the survey of fixed-point fields, the proportion of urea, 10.3kg, and 25.3kg of superphosphate was used in the two wheat bases, and the amount of urea was more than that in recent years. Both of them were covered with soil after application, which will help improve fertility and promote winter hair growth.

4. Some field weeds are more prosperous. Due to dry and dry soil in early days, the herbicide was not used or its effect was poor. Some rapeseed and wheat field grass are more, mainly grassy weeds.

5. The number of seedlings is relatively small. Due to the dry weather from September to October and the shortage of rapeseed, the vegetable crop is small and small, which restricts the planting area and progress of rapeseed to a certain extent; the weather continues to dry in early November, the seedling rate of early sowing wheat is low, and the average seedlings per mu are: Barley: 197.3 thousand, wheat 181,500, which in turn decreased by 0.56 million and 0.55 million over the same period of the previous 5 years.

Second, the current wheat oil cultivation and management techniques

In view of the fact that the seedlings, slow growth, and relatively few wheat seedlings in the early stage of this year's second wheat seed oilseed rape, the next phase of management will focus on:

1. Topdressing Miaofei and promoting winter hair. For those wheat fields where the fertilization is insufficient or not applied in the previous stage, early rain should be used to catch fertilizer as early as possible. Mushi urea should be applied at about 10 kg to promote premature wheat production before winter and promote early tillering of Ermai to make up for the low number of wheat seedlings and the small amount of rapeseed. The lack of.

2. Dredge the trenches to prevent them from getting cold and cold. “Long drought and prolonged rain”, most of the wheat field systems are ditched this year, and many of them are not opened or sluggish. They should be opened artificially to deepen the “ditch head” and dredge silt; unripe rape fields should be tightened. Excavation, prevention of waterlogging due to rain in winter and spring; while digging trenches, the soil is rooted and kept warm.

3. Chemical weeding. According to the herbicide, the appropriate herbicide should be used. In the 2-leaf stage, Ermai should use 25% Isoproturon WP300g per acre with 50kg water spray; Rape field should be used for grass weeds with 10% Caucasica EC25- 30ml water 40kg targeted spray.

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