Rape is a crop that requires more boron. Rational application of boron fertilizer can promote robust growth and increase the number of knots. Usually, the boron fertilizer should be applied before the flowering of the rapeseed to ensure the demand for boron in the growth and development of the plant from the flowering to the pod. Seedling stage and flood season are two key periods of boron spraying. The effect of spraying boron fertilizer during flowering and pod development is poor. Boron fertilizer can be used as base fertilizer and foliar fertilizer. The corresponding fertilization method can be selected according to soil boron content and rape growth.
The base is suitable for medium or severely deficient soil. 0.5 kg of borax per acre, mixed with fine soil or fertilizer, and then applied in a ditch or a hole. It is not suitable for deep application or application. Excessive boron will affect the growth of rapeseed, so even in the soil with severe boron deficiency, the amount of borax per mu should not exceed 2 kg.
Foliar spraying Foliar spray of boron not only saves fertilizer, but also adjusts according to the characteristics of boron required for each growth period of rapeseed. The optimum application period is late seedling stage (before and after flower bud differentiation) and twitching period (15-30 cm high), applied in 2 times, using borax 100-150 g per acre (dissolved with a small amount of hot water) and adding 50 kg of water. spray. In order to effectively increase the seed setting rate of rapeseed, increase the number of grains and increase the 1000-grain weight, it is better to spray the potassium dihydrogen phosphate solution. It is better to spray the sun before 10 am or after 4 pm. It should be noted that in areas with severe boron deficiency, if the number of spraying is small, it is often impossible to ensure the requirement of boron in rape in time, which results in less effect than the basic application of boron fertilizer.
The base is suitable for medium or severely deficient soil. 0.5 kg of borax per acre, mixed with fine soil or fertilizer, and then applied in a ditch or a hole. It is not suitable for deep application or application. Excessive boron will affect the growth of rapeseed, so even in the soil with severe boron deficiency, the amount of borax per mu should not exceed 2 kg.
Foliar spraying Foliar spray of boron not only saves fertilizer, but also adjusts according to the characteristics of boron required for each growth period of rapeseed. The optimum application period is late seedling stage (before and after flower bud differentiation) and twitching period (15-30 cm high), applied in 2 times, using borax 100-150 g per acre (dissolved with a small amount of hot water) and adding 50 kg of water. spray. In order to effectively increase the seed setting rate of rapeseed, increase the number of grains and increase the 1000-grain weight, it is better to spray the potassium dihydrogen phosphate solution. It is better to spray the sun before 10 am or after 4 pm. It should be noted that in areas with severe boron deficiency, if the number of spraying is small, it is often impossible to ensure the requirement of boron in rape in time, which results in less effect than the basic application of boron fertilizer.
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
Municipal Street Light Head,Aluminum Die-Casting Outdoor Street Light,High Efficiency Outdoor Light,Led Courtyard Lamp Head
Jiangsu chuanglv Transportation Facilities Co., Ltd , https://www.clsolarlights.com