Study And Practice On Pollution-Free Prodution Key Techniques In Maize

This study has carried on more comprehensive exposition to domestic and international pollution-free agriculture, pollution-free agricultural products and pollution-free standardized techniques of maize at present, to the practical problem existing in the pollution-free production of the maize, start with the screening, the worthy of constructing rationallying of fertilizer, drug effect of the pollution-free agriculture chemical of the soil state, variety of the maize producing area, carry on multiple field experiment, is it produce actual state is it form one maize pollution-free technical regulation that standardization produces to assemble to combine.1. Adopt" S " type method fetch topsoil (0-0.20m ) soil, use four points of method to stay to fetch determining kind, through an analysis of fertility level of the sample, have grasped the interreaction among the cultivated land soil topsoil basic fertility state of four villages and towns of Tai'an and fertility factor tentatively, should be advocated constructing again organically and fertily in a more cost-effective manner in the agricultural production in the future, is worthy of constructing with the inorganic fertily rationally organically and fertily, the chemical fertilizer uses the structure to follow and accuse of nitrogen, steady phosphorus, principle of increasing the potassium, and the proper micro- nutrition element while constructing again.2. Introduce 26 newest varieties bred about the breeding unit inside and outside the province, screen more than the experiment through the field product, screen and is suitable for 5 new varieties of high yield, maize resisted high-qualitily and more that our city plants.they are Zheng dan 958, X1150X, Jun dan 20, Lu dan 9002and Tian tai 10.3. Through organic ecology being fat to can know to maize output andsoil result of study that fertility influence maize use organic fat to increase production 13. 4%, hectare increases net profit by 2178 .7 yuan every year. At the same time the soil organic matter, quick-acting phosphorus, content of quick-acting potassium obviously improve. Respectively is 8.9%^ 109.1% and 40.8%.4. Through study and produce pollution-free food limit weed killer 20% Pendime thalin use maize field for to prevent and cure weeds have kind prevention and cure result very summer, and the maize is safe to summer, can control the main weeds of the breeding time of the maize of summer effectively, can is it produce pollution-free maize to use for, 20% Pendime thalin propose consumption by 556.9-742.5g/hm2is right.5. Whether become thoroughly decomposed sterilization chicken excrement and different density chemical fertilizer is it construct result of the test of the result indicate to worthy of. Become thoroughly decomposed sterilization chicken excrement and chemical fertilizer is it is it can improve fertilizer efficiency to construct to worthy of, it effects fruit superior to with high-concentration fertilizer is it construct to buying again to increase production to construct to worthy of with low density chemical fertilizer, worthy of constructinging can improve soil fertility, the two are worthy of constructing and having using value of higher development.6. The maize uses the nitrogen, phosphorus, potassium, zinc fertilizer efficiency experimental study to indicate in summer: N,P ^ K ,Zn fertilizer form are construct or worthy of constructing and having certain result of increasing the production of to the output of the maize, function size successively N fertilizer >K fertilizer >Zn fertilizer >P fertilizer, N fertilizer has to be leading nutrition element that maize increase production, K takes second place fertily; Can improve a quality of economic properties of the maize and seed in summer notably while applying fertilizer at the same time. The fertile culture of maize applies fertilizer the structure should take nitrogen potassium as the core in summer, complement it with the phosphorus fertilizer,it is fertile to construct the right amount zinc again.7. Have formed the pollution-free standardized production techniques regulation of the maize of summer of a set of Taian, this standard has stipulated standard of producing area and culture specification requirement that the pollution-free maize in our province produces, especially according to the stipulation that the environmental specification requirement and agriculture chemical, chemical fertilizer of producing area for the pollution-free food in the country use criterion, combine the prevention and cure experience of the main plant diseases and insect pests of maize in recent years in our province, propose the instructions for use of the agriculture chemical, chemical fertilizer in the pollution-free maize in Taian is produced, this standardization that will contribute to the pollution-free food production techniques in our province is operated and managed, the pollution-free culture instructing the maize and producing, thus reduce and even stop the pollution of the maize of harmful substance in the chemical fertilizer, agriculture chemical, promote the sustainable development of agricultural production.