Productivities and economic benefits of the different cultivations way of rice

In terms of evaluation method of agro-economic benefits and analysis of variance and linear regression，productivities，the stability of yields and economic benefits of rices that are cultivated in the ways of direct seeding，water-heavy seeding，dry-light seeding and throwing seeding are analyzed．The advices that the throwing seeding technique should be spread on,with partly dry-light seeding，and the water-heavy seeding and direct seeding should be obsoleted，are raised．