论文部分内容阅读
一、作物缺钾症状缺钾作物较正常植株矮小,叶色变褐,叶片枯死,植株较柔弱,易倒伏,易感染病虫害。玉米籽粒干瘪、皱缩。棉花棉铃小,吐絮差,难以正常成熟,纤维品质下降。二、钾肥施用技术1.钾肥应深施、集中施。钾在土壤中易于被黏土矿物特别是2∶1型黏土矿物所固定,将钾肥深施可减少因表层土壤干湿交替频繁所引起的这种晶格固定,提高钾肥的利用率。
First, the symptoms of potassium deficiency Potassium-deficient plants shorter than normal plants, brown leaves, withered leaves, plants are weak, prone to lodging, susceptible to pests and diseases. Corn kernels are shriveled and shriveled. Small bolls of cotton boll, poor bolting, difficult to mature, fiber quality decline. Second, the application of potassium fertilizer 1. Potash should be deep facilities, focus on facilities. Potassium in the soil is easily fixed by clay minerals, especially the 2: 1 type of clay minerals. Potash fertilizer application can reduce the fixation of the crystal lattice caused by alternating wetting and drying of topsoil and improve the utilization rate of potash fertilizer.