“This year, due to more rain at the late stage of rapeseed cultivation, the rape seedlings are bright green, and after planting, they must grow in order to reach the winter spring season. We must strengthen field management after planting...†November 4th, Dadukou, Naxi District, Chenzhou City In the town of Guangming Village, the town’s agronomist Deng Wenge directed Wang Chenglin and other villagers to transplant rape seedlings. Deng Wenge said that rapeseed must produce high yields, and in the late fall and early winter seasons, rapeseeds in south Sichuan should grasp several links such as transplanting and field management.
Transplanting in a timely manner, reasonable dense planting
When the rape seedlings have 4 leaves and the seedling age is 30 to 35 days, transplanting begins, generally in late October and early November. Transplanting rapeseed fields can be done without digging fine rice fields or dry lands (with no-tillage cultivation). Only the “Sangou†(weigou, main ditch and car ditch) and weeds can be cleared. Wide and narrow rows of nests were transplanted in a graded manner, with a net width of 60 cm, a narrow row spacing of 40 cm and a nest spacing of 40 cm. Each nest had two strains (two strains must be separated). about. 200cm open-belt round-trip rapeseeds are planted with 2 rows of rapeseed, with a narrow row spacing of 40cm and a nest spacing of 40cm. Each litter has two plants, about 667-3300 plants per plant. For every 667?, 1500kg of manure water shall be used to inject enough manure water.
Deng Wenge reminded that seedlings should pay attention to selecting strong seedlings, and the root system is relatively more developed. 7-10 days after transplanting, seedlings should be checked in time. For the shortage of rapeseed, strong seedlings should be used for supplementary planting. After planting, the rooted clearing water should be reused to ensure that the seedlings are strong.
Fertilizer topdressing three good
Deng Wenge said that during rapeseed field management, reasonable fertilization based on seedling growth conditions and different growth periods for nutrient needs can promote early-onset, stable growth, strong moss, increase branches, promote flowering, add pods, and increase grain weight. The effect has a very significant increase in production.
(a), Miao Fei. Should be applied early and diligently. Rape, especially hybrid rapeseed, has a strong growth advantage at the seedling stage and requires a large amount of fertilizer. The early winter is an important period for fertilizer demand. The availability of sufficient nutrients at this stage has an important effect on the number of effective branches per plant and the number of pods. In order to meet the nutrient requirements for the growth and development of rapeseed, topdressing should be performed according to different seedling potentials, mainly organic fertilizers. Phosphorus can promote the development of rapeseed roots and enhance resistance; Potassium can improve rapeseed's ability to resist cold, disease and lodging. Therefore, the amount of nitrogen fertilizer should be appropriately reduced when chasing fertilization, so as to avoid the plants being tender and juicy and having poor cold resistance. Generally divided into 2 applications. The first application was made when the rape was returned to green 7-10 days after transplanting to facilitate the growth of seedlings before winter. The method is to apply 500-1000 kilograms of human dung and 2-3 kilograms of urea (or 10 kilograms of ammonium bicarbonate) to the roots of each person. For fields with insufficient base fertilizer, poor growth potential, and low-yield fertilizer, the first half of the fertilization period should be followed by a second recovery. Urea can be used 4-5 kg ​​(or 15 kg of ammonium bicarbonate, or 600 kg of human waste) pouring water, drought and dry soil when appropriate more than water. Fertilizer should be combined with cultivator and herbicide to cover fertilizer.
(b), wax fertilizer. Waxen has the effect of warming, freezing, and promoting spring hair. It is generally applied in the middle or late December. To delay the effectiveness of manure, mud, cake-based (such as chemical fertilizers, the amount to be controlled to prevent excessive tender), with the application of a certain amount of plant ash, superphosphate, can increase soil temperature 2-3 degrees, play winter spring hair Effect. For example, if the number of green leaves is less than 10 pieces in the middle or late November, organic manure such as pig cow dung or earth miscellaneous fertilizer may be added between rows of rapeseed. Usually, 100-150 kilograms of plant ash are used in Mushi, and 1000-1,500 kilograms of pig dung are used. Soil manure 2500-3000 kg (or 900-1000 kg of fire and earth ash); if the seedlings are smaller, they should be applied. Sprinkle around the rhizome of the rape or fill the nest. After the application, loose soil and cover the roots with fertilizer. For example, in the late November, when the number of green leaves reaches 13 or so, the seedlings will flourish, and the dark green color of the leaves may be less or not applied.
(c), foliar fertilizer. Rape before winter foliar spraying phosphorus, potassium fertilizer, can increase the cell liquid concentration, reduce the freezing point and enhance cold resistance. Therefore, during the overwintering period, potassium dihydrogen phosphate, vigor, Huimanfeng and other solutions can be sprayed, and a boron-deficient rapeseed field can be sprayed with a 0.2% borax solution, which is favorable for freezing and seedling preservation.
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