Effect Of The Application Of Ultra-fine Phosphate And Potash Rock Powder On Several Cros

Phosphorus and potassium are the essential macronutrients of plant growth anddevelopment, application of phosphorus and potassium fertilizers is an important measure toprotect high and stable yields of crops. Applying a large number of water-soluble phosphatefertilizer in farmland will easy loss with drainage, and will easily lead to the eutrophication ofrivers and lakes and other water. In addition, China is one of the largest potash fertilizerconsumption and import dependence countries in the world, sylvite for potash fertilizerproduction in China are scarce mineral resources. Ultra-fine phosphate and potash rockpowder is a new type of fertilizer, with simple processing, saving sulfuric acid; make full useof phosphate and potassium mineral resources and environmentally-friendly.In this experiment, I took ultra-fine phosphate and potash rock powder tests in severalplaces (Juxian, Binzhou, Gaomi, Caoxian Shandong) and on several crops (Peanut, jujube,sweet potatoes, winter wheat), expecting to provide a basis to validate the feasibility ofultra-fine phosphate and potash rock powder in the farmland area. The results are as follows:1. Ultra-fine phosphate and potash rock powder can improve the agronomic traits ofcrops, and promote the growth of crops. The peanut leaf length increased by13.1%-37.6%,13.0%-43.5%in leaf width, main stem height increased by7.9%-22.6%, branch lengthincreased by8.5%-26.5%. Increased the winter jujube single fruit weight, especially theproportion of fruits greater than16g. Increased the amount of winter wheat emergence,number of tillers before winter and biomass before winter; increased wheat tillering to paniclerate and the wheat flag leaf size.2. Ultra-fine phosphate and potash rock powder plays a significant role in improvingquality of crops. Compared with the blank, significantly improved the peanut grain proteinand crude fat content, rate of pod quality fruit increased12.5%and8.7%respectively;improved the jujube fruit coloring degree and increased fruit dry matter and soluble solidscontent by2.19%～2.25%,2.55%～3.80%; improved dry matter content in sweet potatotuber and promoted the absorption of phosphorus and potassium elements in the tuber. 3. Ultra-fine phosphate and potash rock powder can make the crops yield and increaseeconomic efficiency. Peanut pod yield increased by10.62%to19.33%,4.01%to8.76%byeconomic efficiency; spring sweet potatoes increased by33.1%to81.1%, and summer sweetpotatoes increased by36.7%to81.2%; winter wheat production increased by14.19%to28.80%.4. Ultra-fine phosphate and potash rock powder can increase soil phosphorus andpotassium effect. And because of its slow release characteristics, after a large number ofultra-fine phosphate and potash rock powder applied, the residues content in the soil weremore than conventional fertilizer. It has important significance to improve agriculturalcropping index, to promote farmland potassium engineering as well as to alleviate theshortage of potash contradiction.