Intermediate fertilization to ensure that rapeseed wintering
First, early application, heavy application of seedlings and fertilizers, two applications, the first time after transplanting live trees (live rapeseed in the seedlings), generally from early November to late November, re-application of nitrogen fertilizer, urea application 5 ~ 6 kg is appropriate; the second time in mid-December, the first application of seedling fertilizer (or called fertilizer), preferably based on farmyard manure.
It is necessary to cultivate weeding: cultivating can loosen, improve soil aeration and physical and chemical properties, increase ground temperature, eliminate weeds, and contribute to soil microbial activity and rooting of rapeseed. Generally, after transplanting live trees (live rapeseed in 4 to 5 true leaves), shallow cultivating is carried out, 3 to 5 cm deep, followed by cultivating seedlings after cultivating; the second time is deep cultivating before the end of November. Deep 7 ~ 10 cm, it is best to combine the application of wax fertilizer, roots and soil, to protect against freezing. To classify operations, early-planting, early planting, fertility, and good-growing rapeseed should be deep-cultivated to cut off part of the root system and control the growth of the aboveground part; for late-casting and seedlings, it is necessary to combine the topdressing and promoting the strong seedlings.
Secondly, it is necessary to re-apply the fertilizer in the middle of the winter solstice to the small cold to apply the farmyard manure such as soil dregs, manure, grass ash and soil fertilizer, which can meet the needs of winter rapeseed vegetative growth and reproductive growth, and After the Spring, the rapeseed is early to provide nutrients, which is the spring use of wax fertilizer. The fertilizer can improve the soil temperature, keep warm and freeze, and has a greater effect on reducing the root damage of seedling roots.
Third, timely drought resistance During the winter, the rapeseed plants are smaller, the roots are shallower, and the drought-resistance and anti-sucking ability are poor. At this time, if there is drought, it should be timely to resist drought, so as to facilitate the adjustment of the field temperature difference, thereby reducing the freezing damage caused by the cold wave and promoting the safe wintering of rapeseed.
It is necessary to cultivate weeding: cultivating can loosen, improve soil aeration and physical and chemical properties, increase ground temperature, eliminate weeds, and contribute to soil microbial activity and rooting of rapeseed. Generally, after transplanting live trees (live rapeseed in 4 to 5 true leaves), shallow cultivating is carried out, 3 to 5 cm deep, followed by cultivating seedlings after cultivating; the second time is deep cultivating before the end of November. Deep 7 ~ 10 cm, it is best to combine the application of wax fertilizer, roots and soil, to protect against freezing. To classify operations, early-planting, early planting, fertility, and good-growing rapeseed should be deep-cultivated to cut off part of the root system and control the growth of the aboveground part; for late-casting and seedlings, it is necessary to combine the topdressing and promoting the strong seedlings.
Secondly, it is necessary to re-apply the fertilizer in the middle of the winter solstice to the small cold to apply the farmyard manure such as soil dregs, manure, grass ash and soil fertilizer, which can meet the needs of winter rapeseed vegetative growth and reproductive growth, and After the Spring, the rapeseed is early to provide nutrients, which is the spring use of wax fertilizer. The fertilizer can improve the soil temperature, keep warm and freeze, and has a greater effect on reducing the root damage of seedling roots.
Third, timely drought resistance During the winter, the rapeseed plants are smaller, the roots are shallower, and the drought-resistance and anti-sucking ability are poor. At this time, if there is drought, it should be timely to resist drought, so as to facilitate the adjustment of the field temperature difference, thereby reducing the freezing damage caused by the cold wave and promoting the safe wintering of rapeseed.
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
Brass knurled thread insert Made of brass material, good thermal conductivity and heat resistance.
Widely Used On the Injection molding for Tightly Fixing.
Brass knurled Can be installed by ultrasonic or heat into thread tapered hole, or molded in during injection.
We are manufacturer of Insert Nut in China, if you want to buy Embedment Insert Nut,Brass Threaded Knurled Insert,Insert Thread Nuts please contact us.
knurled insert nut,threaded insert nut,wood insert nut,brass insert nut,furniture insert nut
Shenzhen Lanejoy Technology Co.,LTD , https://www.baking-rack.com