The Effects Of Different Cultivation Methods On Growth,Yield And Quality Of Yunnan Spring Potato

Potato is the third most important food crop in Yunnan Province,Yunnan potato spring for more than 70% of the total acreage of the province's potato,but the spring was drought and little rain in Yunnan,it lead to the potato emergence late,late blight often encountered during growth,resulting in low yields.Previously,the cultivation techniques of film drip irrigation and film filling irrigation were used to improve the emergence rate and yield of potato in spring.However,such cultivation method was required to be ruptured by artificial rupture or after emergence.It was consuming time and labored Watering,If the area do not have the irrigation conditions of the planting area,the area can not achieve the purpose of water saving and drought.In this experiment,the effects of different soil coating patterns and different cultivation methods on soil temperature and humidity,potato growth and tuber yield and quality were studied in this paper.technology.The main conclusions drawn from the study are as follows:1.Experiments in 2015 show that: the film on the casing significantly improved the emergence of seedlings to extend the growth period,monopoly film on the cover of the cultivation of the way under the performance can not emerge.Film thickness 0.008 mm is early to Film thickness 0.016 mm emerge and higher emergence rate and faster rapid emerge.The plant height and stem diameter and branch number of the film were higher than that of the conventional cultivation.The treatment of film thickness was 0.008 mm and the soil thickness was 6 cm,It has highest plant height.The 2016 test showed that the first,fastest,and longest growth period were observed.2.By way of determination of soil temperature and humidity,experiments in 2015 show that the film can significantly maintain the soil moisture and increase the soil temperature,which is not covered by soil coating soil temperature caused by rotten soil,which may be no reason for emergence,The film thickness is 0.008 mm and the thickness of casing is 4 cm.the soil moisture content is the largest in the soil coating pattern,the coefficient of variation is the lowest and the water retention capacity is the strongest.In 2016,the experiment showed that the mulching and ditching could increase the soil moisture more than other cultivating modes,and the catchment area was large and the water harvesting ability was strong,and the film could reduce the surface water evaporation and maintain the soil water content.3.Experiments in 2015 show that: different film overburden model,with a thickness of 0.008 mm of the film and the film coated with 6 cm soil treatment yield the highest.Experiments in 2016 show that:The yield of single plant was the highest in the different cultivated patterns,followed by the treatment of 4 m soil.From tuber quality point of view,all glycoalkaloids under cultivation pattern did not exceed national safety standards 20 mg / 100 g,safe to eat,but covered furrow sowing dry matter,starch,reducing sugar content were the highest protein content than low,minimum content of glycoalkaloids.4.The film overlying soil and covered sowing can be early emergence,effectively avoid the dangers of late blight,so as to improve the potato yield,improve quality.However,the film coating method is more conducive to mechanized cultivation,and the film casing method to cover the thickness of 0.008 mm of the film and the film over 4-6 cm soil treatment effect is the best.