Effects Of Mulching Mode On The Growth And Micro-environmental Of Greenhouse Capsicum (Capsicum Anmuum L.)

Agricultural facilities as a development of traditional agriculture to modern agriculture an important turning point,is to solve the"Three Rural"issue,the development of rural economy and promote the ecological environment of intensive,highly efficient mode of production.With the western development policy, agricultural facilities is particularly important.Facilities-based vegetables and vegetable production in northern China has developed rapidly, due to growing peppers, good economic returns, which has become an important vegetable crops in Northwest China, peppers in the northwest region dominated by open field cultivation in recent years, the area of protected cultivation expanding.This study tested the pepper crop, in the Northwest A & F University, Yangling, Shaanxi Institute of Soil and Water conservation in the greenhouse test site. Covering a total of 4 treatment: plastic film mulching (film thickness of 0.01mm, cover the plants between the lines, surrounded by soil compaction, T1), straw mulch (wheat straw decomposition half, length 3 cm, the amount of 1kg ? m? 2,T2 ), plus straw mulch plastic film (plastic film cover on the plant between the lines, surrounded by half-covered with wheat straw decomposition, straw length of 3cm, the amount 0.5kg ? m ? 2,T3), control (no cover, CK), 3 times for each treatment Repeat, in order to benefit from screening and pepper growth and development of better coverage of micro-environment mode. The main results are as follows:1. Single cover with plastic film or straw method and compared to the control, add straw mulch film production in the greenhouse pepper has obvious advantages. The results of the whole pepper, add straw mulch plastic film can effectively promote plant growth and development, vegetative growth area for the plant height, stem diameter, crown width, the growth aspects of reproductive performance of fruit length, fruit diameter were growing faster, increasing the results Pepper relative of chlorophyll content and plant dry weight and the total dry weight, and significantly increased pepper production, reduce water consumption. Plus straw mulch plastic film, plastic film mulch and straw mulch treatment were under the control of water use efficiency of 2.15 times, 2.05 times and 1.64 times. Plus straw mulching film is also effective in increasing the vitamin C content, free amino acid content, thus improving the quality of pepper fruits. Therefore, the coverage of treatment can obtain a higher income, good quality and water effects. In summary, the film plus straw mulch is beneficial way of growth and development of greenhouse pepper better coverage model.2. The results in the whole period pepper, plastic straw mulch can increase the light intensity remained relatively stable, effectively reducing the harm caused by excessive light and other adverse factors, raise the canopy at low temperatures, high temperatures reduce the canopy temperature, security The plants to adapt to the normal growth temperature. Cover changed to gas heat near the evaporation intensity is changed, thus affecting the changes in air humidity, air humidity conditions in turn affect the evaporation. Plus straw mulching in the film, the result is greater than the initial soil temperature warming to mulching, the results of peak and late cooling trend in soil temperature is less than mulching. In terms of physical and chemical properties of soil, straw mulching film plus a significant increase in soil organic matter content and hydrolysis of the nitrogen content, reducing the available phosphorus content in soil, increased crop uptake of soil phosphorus and phosphorus utilization, reduce soil bulk density and Increase soil porosity, improve soil structure, making the soil aeration, water permeability and water holding capacity of more coordinated, steady performance increase water and fertilizer to promote plant growth and development, and significantly increased pepper yield and water use efficiency, reducing water consumption To achieve access to higher income and the purpose of water-saving effect. Thus available, plus straw mulch plastic film method is the growth of micro-environment conducive to a better chili cover model.