论文部分内容阅读
1 根据作物营养特性施用钾肥 1.1 作物种类不同,钾肥效果不同,各种作物的需钾量和吸钾能力不同,因而施钾肥的增产效果也不一样。马铃薯、甘薯、甜菜、西瓜和果树等经济作物需钾量较大,称为“喜钾作物”,施用钾肥增产效果都很明显,还能改善品质,应优先安排施用钾肥。多数经济作物对钾肥反应敏感,栽培经济作物的土壤,往往钾素供应水平低,因此发展经济作物
1 According to crop nutrition characteristics of the application of potassium 1.1 Crops of different types, different potash effect, a variety of crop potassium demand and potassium absorption capacity is different, so the yield of potassium fertilizer is not the same. Potash, sweet potatoes, sugar beet, watermelon and fruit trees and other cash crops need more potassium, known as “hi potassium crops”, the application of potash fertilizer yield are obvious, but also improve quality, priority should be given to the application of potash. Most cash crops are sensitive to potash and the soil for growing cash crops tends to have a low level of supply of potash so developing cash crops