Mechanized Seedling Transplantation Technology

Time:

2013-04-06


In recent years, with the rapid expansion of the area of rice transplants by machines, the time and age of farmers to organize their fields, as well as the mud settling time of about 3 days after leveling the land, have led to an abnormally fast germination rate of weeds between water and drought. This often leads to the emergence of weeds before transplanting by the transplanter, thereby delaying the optimal period for soil enclosed weeding, causing early onset weed damage, affecting rice growth, and increasing weed control costs. In response to the above situation and the emergence patterns of weeds in machine transplanting fields, experts suggest that: recognize the emergence patterns of weeds twice, select safe and efficient pesticides, such as Shuangchao (53% benzyl pyridyl benzothiazide wettable powder) or Kuaidiaofeng (35% benzyl pyridyl benzothiazide WP), Kuaidiao 69 (69% benzyl pyridyl benzothiazide wettable powder), and Lebangnong (68% pyrazol benzothiazide wettable powder), apply them in a timely manner, and maintain water for 5-7 days.

Twice grass emergence time and supporting chemical removal technology for mechanically transplanted rice paddies:

(1) Soaking and closing the field: For the first peak of grass emergence, do a good job in the first chemical removal technology: The first peak of grass emergence is usually 3-5 days after leveling the field and 1-3 days before transplanting, mainly consisting of a large number of grass weeds such as barnyard grass and millet, as well as a small amount of broad-leaved weeds.

1. If the harm of Qianjinzi is low, the fields mainly composed of other broad-leaved weeds, combined with mud sedimentation, should be raked and leveled in the field, and then mixed with 60-80g/mu of Shuangchao (53% Benazolin Benzothiazid wettable powder) or 50-60g of Daozun (69% Benazolin Benzothiazid wettable powder) as base fertilizer or evenly sprayed with 30-50kg/mu of moist fine soil for 5-7 days.

2. If the base of Qianjinzi is large, you can choose to use live broadcast of 35% Benazolin • Prochloraz WP 100-120 grams, mix base fertilizer or wet fine soil 30-50 kg/mu evenly spread, and maintain the water depth for 5-7 days to control the harm of Qianjinzi.

(2) Post planting closure: For the second peak of grass emergence, do a good job of secondary removal: The second peak of grass emergence is usually around 10-15 days after transplanting seedlings, and between 7-10 days after transplanting, you can choose again to use Shuangchao (53% Benazolin Benzothiazide wettable powder) 60-80g/mu or Daozun (69% Benazolin Benzothiazide) 50-60g or Lebonnon (68% Pyrazolin Benzothiazide) 50g mixed with green and strong seedling fertilizer (Xingxin fertilizer) or wet fine soil 30-50kg/mu for uniform application, Maintain the water depth for 5-7 days.

In short, there are two key points that must be mastered in machine transplanting and chemical removal: recognizing the pattern of weed emergence twice, and selecting safe and efficient pesticides accurately. For the first time, combined with mud sedimentation, the base fertilizer was mixed and applied with 53% double superpyridamole • benzothiazide 60-80g per mu, and the field with a large base of Qianjinzi was evenly spread with 35% direct seeding of bentyridamole • propachlor. On the basis of pre planting closure and removal, herbicides should be applied once every 7-10 days after planting to ensure weed control effect. 60-80g of Shuangchao (53% benazolin • benzothiazide) or 50-60g of Daozun (69% benazolin • benzothiazide) or 50g of Lebangnong (68% pyrazolin • benzothiazide wettable powder) should be used per mu, and mixed with returning green fertilizer for spraying.

Prevention and control of pests and diseases. According to the plant protection department's pest and disease information, refer to ordinary fields for prevention and control