Economic Benefits of Different Planting Patterns of Lily and Rice and Their Effects on Soil Quality
In order to solve the successive cropping obstacle of the lily,tiger lily was studied.Field tests were conducted in Yongzhou City,Hunan Province from 2018 to 2020.Three planting patterns of lily-lily(successive cropping of lily),lily-late rice(water-dry rotation),and early rice-late rice(double cropping rice)were designed.The phenological period,agronomic traits,yield,and soil nutrient content of lily and rice were determined,and the effects of different crop rotation patterns on the lily yield and soil nutrients were studied.The results show that the growth period of lily is 140 days,and it can be harvested before July 20.Late rice can be then planted.The growth period of late rice is 112 days,and it can be harvested before October 16.The indexes of alkali-hydrolyzable nitrogen,available phosphorus,rapidly available potassium,pH value,and organic matter in the field soil treated by water-dry rotation(lily-late rice)increase to varying degrees,and the number of bacteria,fungi,and actinomycetes in the field soil decreases.The total output value and total income reach 14 877.35 and 6 457.65 yuan/667m2 respectively,with a production-investment ratio of 1.77.The water-dry rotation(lily-late rice)pattern is reasonable in the phenology connection of planting in southern Hunan.Both rice and lily can grow and be harvested normally,which can improve the physical and chemical properties of field soil and enhance soil fertility.It can significantly inhibit the reproduction and growth of bacteria,fungi,actinomycetes,and other microorganisms in the field soil and reduce the incidence rate and disease index of lily.The benefits of successive cropping of lily and water-dry rotation planting patterns are significantly greater than those of the double cropping rice planting pattern.
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