Effect Of Palygorskite On Yield And Nutrient Uptake Of Potato

This article is based on field experiment, combined with laboratory measurement of thepalygorskite and NPK fertilizer on potato growth, yield and nutrient uptake, the preliminarydraw the following conclusions:1. Single application of palygorskite or palygorskite and NPK fertilizer on the potato can bethe traits of the major agronomic impact. Single application of palygorskite or singleapplication of NPK, and palygorskite and NPK fertilizer can significantly increase the rate ofemergence of potato compared with the control can increase 8.80%~13.83%; Palygorskite andapplication of NPK fertilizer, can be compared with the control to reduce the number of mainstem of potato, but a certain amount of NPK fertilizer application under the premise ofpalygorskite compared with single application of NPK fertilizer NPK can potato stemincreased, while NPK application is high when there is inhibition of the potato stem the trendof increasing numbers; Single application of palygorskite on potato tubersper plant had no effect, single application of NPK, palygorskite and NPK fertilizer NPK with give and notcompared to tubers per plant increased to 0.8~2.0, but up to a certain amount of NPK fertilizerwhen they inhibited the increase of tubers per plant.2. Potato dry matter accumulation showed a trend of increased and then decreased, potatoleaf and tuber dry matter accumulation similar law, in the middle and late childbearing, singleapplication of NPK accumulation of dry matter growth rate is slow, tends to steady state, butpalygorskite treated with NPK fertilizer dry matter growth rate is still large, palygorskite andNPK fertilizer in the potato late growth stage, can increase the tuber dry matter accumulation3. Single application of palygorskite than the control increase the output of 1.25%~3.85%,at low NPK level, palygorskite and NPK fertilizer production than the single application ofNPK production increased 6.60%~11.30% high NPK level, palygorskite and NPK fertilizerproduction than the single application of NPK production increased 3.96%~13.91%. NPK atthe same level, palygorskite and more single application of NPK fertilizer NPK cansignificantly increase potato production, and with the amount of palygorskite increased therate of increase potato production has increased.4. Compared with the single application of NPK, palygorskite phosphorus and potassiumcan be made with the potato plant in the late growth stage of NPK significantly increased theaccumulation of palygorskite and NPK fertilizer nitrogen could potato accumulation of NPKelements in a more balanced distribution of the whole growth period, early release would notbe too much, not too little late, and potatoes need to coordinate the fertilizer, compare thathigh volume (1500 kg ? hm-2 and 2250 kg ? hm-2, the same below) of palygorskite and whenNPK fertilizer is better. 5. Palygorskite or a single application of palygorskite with NPK fertilizer on soil nitrogen,phosphorus and potassium do not obviously affected. Soil nutrient content was full of potassium>phosphorus>nitrogen,potato maturity total nitrogen,total phosphorus and total potassium showed high levels of NPK> low levels NPK>not applied NPK,but did not show wignificant differences...